Acmeraptor

New features for select apps/tools: you can grab a newer release that adds a needed feature, while the rest of your system stays on Stable versions. (Backports are mostly drawn from Testing and are maintained with a policy to keep an upgrade path to the next Stable.)

Caveats to keep in mind: backports aren’t tested as exhaustively as Stable and are supported on a best-effort basis, so Debian recommends using them sparingly—enable the repo, but cherry-pick only what you need, rather than upgrading everything from backports.