GitHub Copilot adds Gemini 3.8 Flash and announces model deprecations
GitHub
GitHub's Copilot changelog for Sep 3, 2026 lists Gemini 3.8 Flash as now available in Copilot, an upcoming deprecation of selected Copilot models, and reopened Copilot Business and Enterprise signups.
Why it matters
Model roster churn in Copilot signals the fast rotation of mid-tier models enterprises now have to track.
Importance: 2/5
Notable model-roster update in the most widely deployed coding assistant