GitHub Copilot retires six AI models today
Gemini 3.7 Flash, GPT-5.5, GPT-5.4, GPT-5.4 mini, GPT-5 mini and Grok 4.5 stop working across Copilot Chat, inline edits, agent mode and completions from today.
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From The Wire
GitHub Actions starts moving ubuntu-latest to Ubuntu 26.04 today
The ubuntu-latest runner label begins a month-long rollout to Ubuntu 26.04, and GitHub warns the new image can break builds that depend on specific tool versions.
GitHub retires email notifications for repository pushes
The feature let anyone trigger an email to a repository's watchers without consent, so GitHub shut it off and points developers at Actions instead.
GitHub Actions gets lockfiles so a moved tag cannot change your CI
A public preview feature pins workflow dependencies to specific reviewed commits, closing the gap where a shifted tag or branch quietly swaps in different code.