Enterprise-managed default models let administrators choose any Copilot agent model as the default for new conversations while still permitting user selection. Faster fixes from diagnostics add a Fix action that opens inline chat and asks Copilot to repair the issue, reducing steps to resolve problems. More control over MCP server startup introduces a setting to disable automatic startup of Copilot and Claude servers, giving precise activation control. Chat UI now groups messages by turn, adds quick navigation controls, and provides copy and edit actions for user messages with clearer account status.