
Back in May, Microsoft announced that Cortana—the Windows digital voice assistant, not Master Chief's original AI ladyfriend—was being deprecated. Which is a word from the Corporate alignment tongue that translates into English as "killed off".
Her replacement is Windows Copilot, an AI-based personal assistant that does similar things but with a generative language model and less personality. Copilot can answer questions about Windows, summarize documents, suggest Spotify playlists, and so on. There's also Bing Chat as well, I suppose.