You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SubagentsArea: what it touches
ImprovementsKind: in v2.1.227,
ImprovementsSection of the release
What
The description of the Task tool's run_in_background option was rewritten to discourage waiting on agents. Foreground is now reserved for the case where the very next step depends on that agent's answer and nothing else useful could happen in the meantime, so expect more subagents to run in the background.
Evidence
Set to false only when your very next action depends on this agent's result and nothing else could usefully happen while it runs
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
