I must admit, I was very surprised to read rumors of Monty quitting Sun. I haven't heard from him personally but if true I think it is sad but a decision that he has thoroughly thought about since Sun's acquisition of MySQL earlier this year.
I expect him to stay longer though: Perhaps mostly because when I chatted with him a couple of months ago, I had the impression that he intended to stay at least a year or until the Maria storage engine hit the v1.5 milestone.
My sense of foreboding I had in Orlando was not completely unfounded. I did try to be an optimist though - just see my blog posts from that time.