The Releases feature in Sentry has been expanded to support commit data, enabling users to view new and resolved issues, files changed, authors, and detailed deploy emails in a single overview page. Connecting a repository is done by clicking "Add Repository" in the organization's dashboard and sending a webhook. To add commits to releases, a `refs` attribute is sent along with the release creation request, which Sentry uses to determine the relevant commits based on git history and previous releases. Users can resolve issues via commits by including fixes `<SHORT-ID>` in commit messages or pull requests, allowing Sentry to automatically annotate matching issues with references to the commit or pull request.