So Jonathan Rinzler the man behind the awesome series of Making Of book for the Star Wars trilogy recently did an AMA on Reddit.
Out of that came this very interesting tidbit:
blackbetha 18 points 22 hours ago
Jonathan, In your mind, does Boba Fett Escape the Sarlacc Pit?
JonathanRinzler 38 points 21 hours ago
Yes, he does. I have been in meetings with George where he confirms that Fett survived. If it comes from George then it’s true!
There are lots of interesting things in there like Coppola sitting in with George helping him edit animatics for ROTS.