What's new this week: The calm before Build

Build 2026 is ten days out, and this edition is the calm before. VS 2026 18.6.1 patches a hard ARM64 debugger blocker, System.ClientModel 1.13.0 ships breaking credential changes, GitHub Copilot pushes a pre-cutover changelog flurry, and the Musk v. Altman verdict closes a story two editions in the making.