What changed
GitHub’s November 4 announcement puts Copilot in Xcode’s built-in coding assistant as a public preview, starting with Xcode 27.3 beta. Xcode is Apple’s software for building apps. The existing Copilot for Xcode extension remains a separate option. [1] [2]
Check the Mac and project requirements
Apple’s beta notes require macOS Tahoe 26.6 or later. GitHub says all Copilot plans are supported and directs users to Xcode > Settings > Intelligence. The announcement does not specify a Copilot model menu or usage charges for this preview. [1] [2]
Apple’s general setup guide says agents may access project files and other information while processing requests. Workplace administrators can disable external coding-assistant integrations on Macs they manage. [3]
Our take
Try a disposable copy of a small app, because a new integration still needs to earn your confidence. Ask for a change with a clear outcome—for example, a total that stays correct when quantity is zero. Review the changed files and run that check before moving anything into your working app.
That small exercise gives you something useful to compare with your current workflow. We have not installed or tested this preview.