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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.257 ·

Removed standalone 'note' version-description field

The publish-time note field is gone; version naming now goes through label alone.

TierYou'll noticehow much it should matter to you
Useful3my rating, 1 to 5
Signal2worth watching, 1 to 5
AreaArtifactswhat it touches
KindRemovedin v2.1.257,
You'll notice

The publish-time note field is gone; version naming now goes through label alone.

The standalone publish-time note parameter ("publish only: what changed in this version") has been dropped from the schema. Version naming is now covered solely by label, whose description was reworded to also mention a version alias under live-edit.

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Names in the bundlelabel
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up label, on Claude Science changelog. <Update label="0.1.47" description="September 10, 2026"> claude-science/changelog see the edit
Added since A small documentation edit on Changelog touched a line naming label after this was published. <Update label="Known issue: Cowork on Windows" description="2026-09-10"> cowork/changelog see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesA small documentation edit on Changelog touched a line naming label after this was published.

See this entry in the whole of v2.1.257 →

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