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Stories with reporting from GitHub Changelog, ranked by what is gaining ground now. Each story links to the original articles.
Claude Haiku 5.5 is presented as a lightweight model for high-volume work, including subagents, quick edits, terminal tasks, summaries, and classification. It is available in GitHub Copilot and on Amazon Bedrock and Claude Platform on AWS. The AWS announcement says it costs around 75% less than Claude Haiku 4.5 for most tasks; other supplied sources do not confirm that comparison.
GitHub says its purpose-built model is intended to make leaked-secret protection more context-aware and keep pace with software development, including work done with AI agents. Its broader message is that security tools should take on more of the protection burden as developers create more software.
GitHub Changelog Local sandboxing for GitHub Copilot is now generally available in GitHub Copilot CLI, the GitHub Copilot app, and VS Code sessions using Agent Host. Local sandboxes give developers a secure…
GitHub Changelog GitHub Copilot CLI makes it easier to choose a local model without leaving your existing workflow. Starting in CLI version 1.0.94-0, use /model to discover supported models from a running…
GitHub Changelog If your Copilot usage metrics have shown agent activity or agent lines of code falling while Copilot usage kept growing, we’ve found the cause, and a fix is rolling out…
GitHub Changelog GitHub stacked pull requests are now generally available. Break large changes into smaller, focused pull requests that you can review independently and merge together. Since the feature went into public…
GitHub Changelog Organization and enterprise administrators can now see AI Scan for pull requests enablement status in the security overview coverage view. The code scanning summary shows enabled and not enabled repository…
GitHub Changelog Secret scanning now detects new secret types from Lovable Labs, Pydantic Services Inc., and Supabase. New secret scanning partner The following provider joined the secret scanning partnership program. When one…
GitHub Changelog The staged rollout of the stateless GitHub App installation token format, which began on April 27, 2026, is complete. By default, all newly minted GitHub App installation tokens will be…
GitHub Changelog You can now request a GitHub Copilot code review through the REST and GraphQL APIs and set the review effort level for each request. Balanced is also now the default…
GitHub Changelog Unvalidated npm trusted publishing configurations now expire 48 hours after creation and can no longer authorize publishing. This limits the risk of trusting a repository or project name that changes…
GitHub Changelog You can now create a new npm package with npm stage publish, using a local session or a granular access token, including a stage-only token. This lets you create packages…
GitHub Changelog As of today, October 2, 2026, we have deprecated the following models across all GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions). Model…
GitHub Changelog This week, put Copilot to work with new models, reusable workflows and desktop app automation, plus Azure canvases and VS Code improvements. GitHub Copilot Claude Sonnet 5.5 is available to…