I just read, third-hand, that Anne McCaffrey died yesterday. It's news enough that this is the first I can find of it; the world is now such that it's notable that Wikipedia hasn't even been updated yet. But it's plausible enough. She was increasingly frail, had long since handed on the torches of writing in her series, and stopped going to conventions years ago.
No author had a greater impact on the development of my social life and getting to know sf fandom than she did. More anon with further confirmation of this.