The new Copilot Notebooks design in the Microsoft 365 Copilot app now lets users organize related chats, output creations, and references into a persistent AI workspace. Copilot uses the Notebook's accumulated context to ground responses, so work continues across sessions instead of starting over each time. While this is the quicker, light-weight Notebooks experience, you can still find the fuller, workspace-forward experience in OneNote.
GA date: July CY2026
Preview date: June CY2026