Microsoft 365 Copilot May 2026 Updates: EVERYTHING You Need to Know

Microsoft just rolled out one of the most significant Microsoft 365 Copilot updates yet — and it completely changes how you interact with AI across chat, notebooks, Excel, and PowerPoint. REFERENCES Available today: GPT-5.5 Instant in Microsoft 365 Copilot: https://techcommunity.microsoft.com/b... (Co)work in Progress: https://techcommunity.microsoft.com/b... What’s New in Microsoft 365 Copilot | April 2026: https://techcommunity.microsoft.com/b... In this video, we break down everything new in the May 2026 Copilot update, including: • The redesigned Copilot Chat experience and new UI • The new Agent Builder interface and customization capabilities • GPT 5.5 model selection with Quick Response vs Think Deeper modes • Scheduled prompts and automation enhancements • Copilot Notebooks upgrades including mind maps, document creation, and support for web links as references • Excel’s new Plan Mode for structured workflows • PowerPoint’s new editing mode with AI-generated images directly on slides This update isn’t just incremental — it fundamentally changes how you think about AI inside Microsoft 365. If you're using Copilot today, these features could drastically improve your productivity. If you're not — this might be the moment you start. Watch until the end to see how these features connect together into a completely new workflow. If you found this helpful: Like the video, subscribe for more Copilot deep dives, and share this with someone who needs to stay ahead of AI at work. KEY MOMENTS 00:00 Intro 00:45 Copilot Chat Updates 03:50 Copilot Notebooks 08:20 Copilot in Excel 10:50 Copilot in PowerPoint 13:09 Wrap Up