The release adds a maxEffortLevel setting, which can sit at the top level or per model under modelSettings. It caps the effort level on every provider, including Bedrock, Vertex and Foundry, and users can still pick a lower level than the cap.
For anyone iterating on prompt text, --system-prompt-snapshot off renders the system prompt fresh on every request instead of reusing the conversation's recorded prompt.
The rest is repair work: scheduled cloud tasks failing at startup for organizations whose managed settings require sandboxing, blank local command output on mobile clients, and artifact publishes cut off by a dropped connection mid-upload, which now retry once when Claude Code can tell the upload never completed.