Microsoft 365 Copilot introduces a unified plus (+) menu consolidating grounding, tools, and sources for easier prompting. Rolling out worldwide from early March to mid-April 2026, it replaces the separate Tools menu, is enabled by default, requires no admin action, and aims to streamline user workflow.
Applies to: Microsoft 365 Copilot Chat
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).