Telegraf has four minor releases a year in March, June, September, and December. In between each of those minor releases, there are 2-4 bug fix releases that happen every 3 weeks.
This Google Calendar is kept up to date for upcoming release dates. Additionally, users can look at the GitHub milestones for the next minor and bug fix releases.
Telegraf uses semantic versioning.
PRs that resolve issues are released in the next release. PRs that introduce new features are held for the next minor release. Users can view what GitHub milestones a PR belongs to when they want to determine the release it will go out with.