Since he's already dead, there can't be any new developments or updates. He died, that's the end of the story, I don't need new sources to know he's still dead.
My point is kind of that AI's don't have a concept of time and even less of death. But primarily I just thought this reaction is funny.
I would argue that, even tho it's not how a human would respond, it's correct nevertheless. Because there could be news about him still. Maybe someone found out his grave is empty or he faked his death or there is a new song out from him, like with Linkin Park, where they released a "new" song with Chester singing.
I dunno, it makes sense to me. New information or music releases can come out after someone's death, and you asked what he's been up to recently, not if/when he had died
I'm not a native speaker but don't being up to something imply that he is actively doing or planning something? I didn't asked if there were news about him.