Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Background ShellsArea: what it touches
Internal ChangesKind: in v2.1.301,
What probably matters to youSection of the release
What
Claude Code adds two pieces of internal tracking. One is a new state for a "lean rewrite" mode. The other is a new category for background commands that are kept, where a background command is one that keeps running while Claude does other work.
Why
Neither is something you can switch on or see directly. They relate to how Claude Code handles background commands across a turn.
