diff --git a/release-notes/10.0/preview/preview4/10.0.0-preview.4.md b/release-notes/10.0/preview/preview4/10.0.0-preview.4.md
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+# .NET 10 Preview 4 Binaries
+
+.NET 10 Preview 4 installers and binaries can be downloaded for the following product versions:
+
+- `.NET 10.0.0 Preview 4`
+- `.NET SDK 10.0.100-preview.4.xxxx.xx`
diff --git a/release-notes/10.0/preview/preview4/README.md b/release-notes/10.0/preview/preview4/README.md
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+# .NET 10 Preview 4 - Release Notes
+
+.NET 10 Preview 4 released on April X, 2025. Find more information on new features released in .NET 10 Preview 4 by browsing through the release notes below:
+
+- [Libraries](./libraries.md)
+- [Runtime](./runtime.md)
+- [SDK](./sdk.md)
+
+## Languages
+
+- [C#](./csharp.md)
+- [F#](./fsharp.md)
+- [Visual Basic](./visualbasic.md)
+
+## Workloads, Libraries, & More
+
+- [.NET MAUI](./dotnetmaui.md)
+- [ASP.NET Core](./aspnetcore.md)
+- [Container images](./containers.md)
+- [EF Core & Data](./efcore.md)
+- [Windows Forms](./winforms.md)
+- [WPF](./wpf.md)
+
+## Get Started
+
+Instructions on getting started with .NET 10 can be found in the [getting started guide](../../get-started.md). Installers and binaries for .NET 10 Preview 4 can be found [here on GitHub](./10.0.0-preview.3.md).
+
+## Stay up-to-date
+
+You can find a detailed overview of all new features in .NET 10:
+
+- [What's new in .NET 10](https://learn.microsoft.com/dotnet/core/whats-new/dotnet-10/overview)
+- [What's new in C# 14](https://learn.microsoft.com/dotnet/csharp/whats-new/csharp-14)
+- [What's new in .NET MAUI](https://learn.microsoft.com/dotnet/maui/whats-new/dotnet-10)
+- [What's new in ASP.NET Core](https://learn.microsoft.com/aspnet/core/release-notes/aspnetcore-10.0)
+- [What's new in Entity Framework Core](https://learn.microsoft.com/ef/core/what-is-new/ef-core-10.0/whatsnew)
+- [What's new in Windows Forms](https://learn.microsoft.com/dotnet/desktop/winforms/whats-new/net100)
+- [What's new in WPF](https://learn.microsoft.com/dotnet/desktop/wpf/whats-new/net100)
+
+The latest .NET 10 release is always available at [dotnet.microsoft.com](https://dotnet.microsoft.com/download/dotnet/10.0) and [.NET 10 Releases](../../README.md).
diff --git a/release-notes/10.0/preview/preview4/aspnetcore.md b/release-notes/10.0/preview/preview4/aspnetcore.md
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+# ASP.NET Core in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in ASP.NET Core in this preview release:
+
+- [Feature](#feature)
+
+ASP.NET Core updates in .NET 10:
+
+- [What's new in ASP.NET Core in .NET 10](https://learn.microsoft.com/aspnet/core/release-notes/aspnetcore-10.0) documentation.
+- [Breaking changes](https://docs.microsoft.com/dotnet/core/compatibility/10.0#aspnet-core)
+- [Roadmap](https://github.com/dotnet/aspnetcore/issues/59443)
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/containers.md b/release-notes/10.0/preview/preview4/containers.md
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+# Container image updates in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in container images in this preview release:
+
+- [Feature](#feature)
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/csharp.md b/release-notes/10.0/preview/preview4/csharp.md
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+++ b/release-notes/10.0/preview/preview4/csharp.md
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+# C# 14 updates in .NET 10 Preview 43 - Release Notes
+
+Here's a summary of what's new in C# in this preview release:
+
+- [Feature](#feature)
+
+C# 14 updates:
+
+- [What's new in C# 14](https://learn.microsoft.com/dotnet/csharp/whats-new/csharp-14) documentation
+- [Breaking changes in C# 14](https://learn.microsoft.com/dotnet/csharp/whats-new/breaking-changes/compiler%20breaking%20changes%20-%20dotnet%2010)
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/dotnetmaui.md b/release-notes/10.0/preview/preview4/dotnetmaui.md
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+++ b/release-notes/10.0/preview/preview4/dotnetmaui.md
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+# .NET MAUI in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in .NET MAUI, .NET for Android, and .NET for iOS, Mac Catalyst, macOS, and tvOS in this preview release:
+
+- .NET MAUI
+  - [Feature](#feature)
+- [.NET for Android](#net-for-android)
+- [.NET for iOS, Mac Catalyst, macOS, tvOS](#net-for-ios-mac-catalyst-macos-tvos)
+
+.NET MAUI updates in .NET 10:
+
+- [What's new in .NET MAUI in .NET 10](https://learn.microsoft.com/dotnet/maui/whats-new/dotnet-10) documentation.
+
+## Feature
+
+Something about the feature
+
+## .NET for Android
+
+This release was focused on quality improvements. A detailed list can be found on [dotnet/android GitHub releases](https://github.com/dotnet/android/releases/).
+
+## .NET for iOS, Mac Catalyst, macOS, tvOS
+
+This release was focused on quality improvements. A detailed list can be found on [dotnet/macios GitHub releases](https://github.com/dotnet/macios/releases/) including a list of [Known issues](https://github.com/dotnet/macios/wiki/Known-issues-in-.NET10).
diff --git a/release-notes/10.0/preview/preview4/efcore.md b/release-notes/10.0/preview/preview4/efcore.md
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+# Entity Framework Core 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in Entity Framework Core in this preview release:
+
+- [Full-text search support on Azure Cosmos DB for NoSQL](#full-text-search-support-on-azure-cosmos-db-for-nosql)
+- [Vector similarity search exits preview](#vector-similarity-search-exits-preview)
+- [Small improvements](#small-improvements)
+
+Entity Framework Core 10 updates:
+
+- [What's new in Entity Framework Core 10](https://learn.microsoft.com/ef/core/what-is-new/ef-core-10.0/whatsnew) documentation
+- [Breaking change in Entity Framework Core 10](https://learn.microsoft.com/ef/core/what-is-new/ef-core-10.0/breaking-changes)
+
+## Full-text search support on Azure Cosmos DB for NoSQL
+
+Azure Cosmos DB now offers support for [full-text search](/azure/cosmos-db/gen-ai/full-text-search). It enables efficient and effective text searches, as well as evaluating the relevance of documents to a given search query. It can be used in combination with vector search to improve the accuracy of responses in some AI scenarios.
+EF Core 10 is adding support for this feature allowing for modeling the database with full-text search enabled properties and using full-text search functions inside queries targeting Azure Cosmos DB.
+
+Here is a basic EF model configuration enabling full-text search on one of the properties:
+
+```c#
+public class Blog
+{
+    ...
+
+    public string Contents { get; set; }
+}
+
+public class BloggingContext
+{
+    ...
+
+    protected override void OnModelCreating(ModelBuilder modelBuilder)
+    {
+        modelBuilder.Entity<Blog>(b =>
+        {
+            b.Property(x => x.Contents).EnableFullTextSearch();
+            b.HasIndex(x => x.Contents).IsFullTextIndex();
+        });
+    }
+}
+```
+
+Once the model is configured, we can use full-text search operations in queries using methods provided in `EF.Functions`:
+
+```c#
+var cosmosBlogs = await context.Blogs.Where(x => EF.Functions.FullTextContains(x.Contents, "cosmos")).ToListAsync();
+```
+
+The following full-text operations are currently supported: [`FullTextContains`](/azure/cosmos-db/nosql/query/fulltextcontains), [`FullTextContainsAll`](/azure/cosmos-db/nosql/query/fulltextcontainsall), [`FullTextContainsAny`](/azure/cosmos-db/nosql/query/fulltextcontainsany), [`FullTextScore`](/azure/cosmos-db/nosql/query/fulltextscore).
+
+For more information on Cosmos full-text search, see the [docs](/ef/core/providers/cosmos/full-text-search).
+
+## Hybrid search
+
+EF Core now supports [`RRF`](/azure/cosmos-db/nosql/query/rrf) (Reciprocal Rank Fusion) function, which combines vector similarity search and full-text search (i.e. hybrid search). Here is an example query using hybrid search:
+
+```c#
+float[] myVector = /* generate vector data from text, image, etc. */
+var hybrid = await context.Blogs.OrderBy(x => EF.Functions.Rrf(
+        EF.Functions.FullTextScore(x.Contents, "database"), 
+        EF.Functions.VectorDistance(x.Vector, myVector)))
+    .Take(10)
+    .ToListAsync();
+```
+
+For more information on Cosmos hybrid search, see the [docs](/ef/core/providers/cosmos/full-text-search?#hybrid-search).
+
+## Vector similarity search exits preview
+
+In EF9 we added experimental support for vector similarity search. In EF Core 10, vector similarity search support is no longer experimental. We have also made some improvements to the feature:
+
+- EF Core can now generate containers with vector properties defined on owned reference entities. Containers with vector properties defined on owned collections still have to be created by other means. However, they can be used in queries.
+- Model building APIs have been renamed. A vector property can now be configured using the `IsVectorProperty` method, and vector index can be configured using the `IsVectorIndex` method.
+
+For more information on Cosmos vector search, see the [docs](/ef/core/providers/cosmos/vector-search).
+
+## Small improvements
+
+- Translate `COALESCE` as `ISNULL` ([#34171](https://github.com/dotnet/efcore/pull/34171), contributed by [@ranma42](https://github.com/ranma42)).
+- Support for some string functions taking `char` as arguments ([#34999](https://github.com/dotnet/efcore/pull/34999), contributed by [@ChrisJollyAU](https://github.com/ChrisJollyAU)).
+- Support for `MAX`/`MIN`/`ORDER BY` using `decimal` on SQLite ([#35606](https://github.com/dotnet/efcore/pull/35606), contributed by [@ranma42](https://github.com/ranma42)).
+- Changed AsyncLocal to ThreadId for better Lazy loader performance ([#35835](https://github.com/dotnet/efcore/pull/35835), contributed by [@henriquewr](https://github.com/henriquewr)).
+
+## Everything else in Preview 4
+
+Preview 4 contains:
+
+- [11 enhancements](https://github.com/dotnet/efcore/issues?q=is%3Aissue%20state%3Aclosed%20label%3Apreview-4%20milestone%3A10.0.0%20label%3Atype-enhancement)
+- [2 regression bug fixes](https://github.com/dotnet/efcore/issues?q=is%3Aissue%20state%3Aclosed%20label%3Apreview-4%20milestone%3A10.0.0%20label%3Atype-bug%20label%3Aregression)
+- [3 non-regression bug fixes](https://github.com/dotnet/efcore/issues?q=is%3Aissue%20state%3Aclosed%20label%3Apreview-4%20milestone%3A10.0.0%20label%3Atype-bug%20-label%3Aregression%20)
diff --git a/release-notes/10.0/preview/preview4/fsharp.md b/release-notes/10.0/preview/preview4/fsharp.md
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+# F# updates in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in F# in this preview release:
+
+- [F# Language](#f-language)
+- [FSharp.Core standard library](#fsharpcore-standard-library)
+- [FSharp.Compiler.Service](#fsharpcompilerservice)
+
+> Note: Release notes for F# are generated for all contributions to the [dotnet/fsharp](https://github.com/dotnet/fsharp) repository and split across language, library and compiler changes.
+
+## F# Language
+
+[Release notes for new F# language features](https://fsharp.github.io/fsharp-compiler-docs/release-notes/Language.html) list language changes that have to be enabled by `<LangVersion>preview</LangVersion>` project property in `.fsproj` project file. They will become the default with .NET 10 release.
+
+## FSharp.Core Standard Library
+
+[Changes to the FSharp.Core standard library](https://fsharp.github.io/fsharp-compiler-docs/release-notes/FSharp.Core.html) are applied automatically to projects compiled with new SDK, unless they pin down a lower FSharp.Core version.
+
+## FSharp.Compiler.Service
+
+General improvements and bugfixes in the compiler implementation are at [Release notes for FSharp.Compiler.Service](https://fsharp.github.io/fsharp-compiler-docs/release-notes/FSharp.Compiler.Service.html).
diff --git a/release-notes/10.0/preview/preview4/libraries.md b/release-notes/10.0/preview/preview4/libraries.md
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+# .NET Libraries in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in .NET Libraries in this preview release:
+
+- [Feature](#feature)
+
+.NET Libraries updates in .NET 10:
+
+- [What's new in .NET 10](https://learn.microsoft.com/dotnet/core/whats-new/dotnet-10/overview) documentation
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/runtime.md b/release-notes/10.0/preview/preview4/runtime.md
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+# .NET Runtime in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in the .NET Runtime in this preview release:
+
+- [Feature](#feature)
+
+.NET Runtime updates in .NET 10:
+
+- [What's new in .NET 10](https://learn.microsoft.com/dotnet/core/whats-new/dotnet-10/overview) documentation
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/sdk.md b/release-notes/10.0/preview/preview4/sdk.md
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+++ b/release-notes/10.0/preview/preview4/sdk.md
@@ -0,0 +1,13 @@
+# .NET SDK in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in the .NET SDK in this preview release:
+
+- [Feature](#feature)
+
+.NET SDK updates in .NET 10:
+
+- [What's new in .NET 10](https://learn.microsoft.com/dotnet/core/whats-new/dotnet-10/overview) documentation
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/visualbasic.md b/release-notes/10.0/preview/preview4/visualbasic.md
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--- /dev/null
+++ b/release-notes/10.0/preview/preview4/visualbasic.md
@@ -0,0 +1,6 @@
+# Visual Basic updates in .NET 10 Preview 4 - Release Notes
+
+This preview release does not contain new Visual Basic features. Please checkout the lastest documentation:
+
+- [What's new in Visual Basic](https://learn.microsoft.com/dotnet/visual-basic/whats-new/) documentation
+- [Breaking changes](https://learn.microsoft.com/dotnet/visual-basic/whats-new/breaking-changes)
diff --git a/release-notes/10.0/preview/preview4/winforms.md b/release-notes/10.0/preview/preview4/winforms.md
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+++ b/release-notes/10.0/preview/preview4/winforms.md
@@ -0,0 +1,14 @@
+# Windows Forms in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in Windows Forms in this preview release:
+
+- [Feature](#feature)
+
+## Windows Forms updates in .NET 10
+
+- [What's new in Windows Forms in .NET 10](https://learn.microsoft.com/dotnet/desktop/winforms/whats-new/net100) documentation.
+- [Issues List for Windows Forms in .NET 10 Preview 2](https://github.com/dotnet/winforms/issues?q=is%3Aissue%20milestone%3A%2210.0%20Preview2%22%20)
+
+## Feature
+
+Something about the feature
diff --git a/release-notes/10.0/preview/preview4/wpf.md b/release-notes/10.0/preview/preview4/wpf.md
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+++ b/release-notes/10.0/preview/preview4/wpf.md
@@ -0,0 +1,13 @@
+# WPF in .NET 10 Preview 4 - Release Notes
+
+Here's a summary of what's new in WPF in this preview release:
+
+- [Feature](#feature)
+
+WPF updates in .NET 10:
+
+- [What's new in WPF in .NET 10](https://learn.microsoft.com/dotnet/desktop/wpf/whats-new/net100) documentation.
+
+## Feature
+
+Something about the feature