Lucas, Spielberg, and Ford have all expressed their want of the next movie.
Jeff Nathanson worked on the script recently and Lucas is supposed to be rewriting parts (God, help us [img]/ubb/images/graemlins/rofl2.gif[/img]) As of the last I've heard, they are still hoping to begin filming late this year or next.
http://www.cinemablend.com/new.php?id=2097