We've just released a release candidate for the Cosmos SDK v0.52.0. APIs should now be stable, and we encourage everyone to start integrating with this release candidate.
This release is the first totally modular release of the Cosmos SDK. Many components have been extracted in their own modules. Refer to the version matrix to understand what it means.
A final release is expected in the coming days.
Please see the CHANGELOG for an exhaustive list of changes.
Refer to the UPGRADING.md for upgrading your application.
Full Commit History: https://github.com/cosmos/cosmos-sdk/compare/release/v0.50.x...release/v0.52.x