Monty leaves Sun; this time for sure: http://monty-says.blogspot.com/2009/02/time-to-move-on.html
Incidentally a friend of mine met Ted Leung of Sun (local geek celebrity and author of a few books) at the UW Python mini-conference last Saturday. Sun seems very keen on supporting dynamic languages (Python, Ruby, etc) now; they hired Ted to head up that effort.