The Hub reads the Cross Events repo's v* tags (each a release, the newest the latest version) and the client notes from WHATS-NEW.md as of the newest tag, every 15 minutes and on Sync now. Urgent/security in a version heading marks it urgent. Repo address, notes path and an optional encrypted token on the Releases page; manual releases only when no repo is set. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>