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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.1.69

Ultraplan

What

A new remote-session-based planning mode that generates comprehensive implementation plans using a dedicated remote session.

Details
  • Triggered when planning complex implementations
  • Runs a remote session that produces a structured <ultraplan> block
  • Displays "Ultraplanning…" progress indicator during generation
  • The generated plan is written to a plan file for user review
  • After review, the user can approve and proceed to implementation
Evidence

Ultraplan feature (search for "Ultraplanning…", "Ultraplan complete", "ultraplan")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.1.69 →