At its Build event today, Microsoft announced that a new AI assistant called Copilot (as seen in a few Microsoft apps already) is coming to the Windows 11 preview build in June. I don't know if the introduction of Copilot as a Windows-wide "personal assistant" means that what's left of Cortana will be overwritten, but it may as well be, since Copilot serves the same function but with the ultra-hyped mirage of intelligence provided by a generative language model. Copilot can answer questions about Windows features, suggest Spotify playlists, summarize the contents of documents, and act on requests like "Can you send this logo to the Design Squad in Teams?"
That latter task, which appears in the video demonstration above, could've been accomplished by opening Teams and dragging the image there instead, but I suppose the point was to show off Copilot's ability to process natural language requests, not to demonstrate efficient computer use.