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September 26, 2026
On Sep 25, GitHub added enterprise-settings validation to GitHub Copilot: it finds broken JSON, unsupported configurations, and incorrect team mappings that can prevent policies from applying.
Source
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Release
Claude Code will not allow a new model without approval: exact mode in v2.1.283September 26
Tip
Opus 5.5 rewrote a Rust engine in assembly: up to 17× fasterSeptember 26
Release
Review delays will be visible by stage: GitHub adds them to the Usage metrics APISeptember 26
Insight
Chat is not always enough for GitHub Copilot: the app includes canvasesSeptember 25
Release
Copilot brings chat, code and agents into one window: Microsoft combines 3 modesSeptember 25
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