Devin's September 23 Update Adds Session Trees, Faster Permission Resumes, and Helix Swarm Reviews
Cognition shipped another dense round of Devin release notes on September 23, 2026, focused on session navigation, faster resumes after permission approvals, and wider code-review coverage for self-hosted and enterprise Git tooling.
Details
- Session tree from parent sessions: sessions that spawn child sessions now show a session-tree icon; clicking it reveals the full set of child sessions launched from that parent
- Renameable sessions: team members with edit permissions can now rename any session they can edit, not just ones they started themselves
- Faster permission resumes: Devin resumes work immediately after a permission request is approved, cutting the wait users previously saw after granting access mid-session
- Clearer model names in the picker: the capability picker now spells out what each tier runs on — for example, “Ultra” reads as “Highest intelligence available with Fable 5.1 and GPT-6 Astra”
- Performance fixes: reduced UI stuttering in Safari and lower CPU/memory use during streaming responses
- Admin-configurable auto-review: organization admins can now configure automatic review settings and build more composable custom trigger rules for when Devin reviews a pull request automatically
- Self-hosted Git and Helix Swarm support: Devin Review now works with self-hosted Git servers running on non-default ports and adds review integration for Helix Swarm (Perforce)
- Bitbucket Data Center improvements: better comment handling and reviewer management for Bitbucket Data Center repositories
- Code scan findings tabs: individual findings from Devin’s code scans now get their own tabs, alongside assorted Microsoft Teams, MCP, and plugin-management refinements
What happened next
The update lands two days after Devin’s September 21 release, which introduced the SWE-2 research preview and automated merge-conflict resolution, showing Cognition keeping up its rapid release-notes cadence through late September. The mix of session-management polish and expanded review coverage for self-hosted and Perforce-based Git infrastructure continues to push Devin toward broader enterprise source-control support alongside its day-to-day usability fixes.