20M M365 Copilot Seats, OpenAI Deal Reset, and Agent Mode is the New Office Default

Tom Arbuthnot's Microsoft 365 Perspective Many thanks to AudioCodes, this month's community Benefactor, for all their support of the community. I caught up with them last week at M365 conf for the latest news LI / YT. Lots to talk about in the last 2 weeks. Microsoft Q3 FY26 earnings, the OpenAI partnership has been formally restructured (again), Agent Mode is now the default in Word, Excel and PowerPoint, GPT-5.5 is rolling out across Copilot surfaces, and GitHub Copilot is moving to...