What
The usage data Claude Code receives about your account can now include an optional list of time periods, each with a start and an end time. Nothing visible uses it yet.
Why
This looks like preparation for showing usage by period.
Usage data can now include time periods
Claude Code now accepts an optional list of time periods, each with a start and end, in the usage data it receives
Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
Usage & LimitsArea: what it touches
In DevelopmentKind: in v2.1.301,
In DevelopmentSection of the release