Unofficial reconstructed notes, not a Cursor changelog. Some surfaces in a desktop build are gated and may not be live yet.
v3.21.4
stablePublished Sep 16, 2026
✦NEW7
Changelog
Features
- Grok skill now installs as an agent skill you can run from the composer.
- Approvals now cover shell, file, MCP, and hook operations with clearer block reasons.
- Cloud subagents now create, resume, background, and complete from the agent host.
- Agent store now returns dedicated store results when the agent adopts a surface.
- Glass chat now previews Linear tickets in the conversation UI.
- Conversation search now returns matches from the agent host surface.
Notes
- Feature gates still hide some of these surfaces; they shipped in the desktop build but may not be live yet.