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Rate limit dialogs now use server-provided upgrade path data (via the anthropic-ratelimit-unified-upgrade-paths response header) to determine which options to show (overage, plan upgrade), rather than computing them client-side.
Evidence
Server-driven upgrade paths (search for "anthropic-ratelimit-unified-upgrade-paths")
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.