What
You can send a message that interrupts Claude while it is still working on a turn, which is one round of Claude responding. Claude Code now only stops the turn if it has not already been stopped. It also remembers that the interruption happened, and messages written to the transcript afterwards are marked as coming after that cut. Before, sending such a message simply stopped the turn with nothing recorded.
Why
This changes how interrupted turns are recorded in the transcript, the saved history of the conversation, so it is clearer which messages came after you cut in.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear whether the new marking changes anything you can see in the transcript.