Word has it that in about one hour Lucas will be making an announcement at Disneyland. Some think it will be the confirmation of "the big three" coming back for the seventh film.
Yea, I know TFN isn't a great source but it's the only one with a compiled explanation of the rumor. The third update says nothing is planned but some are still optimistic.
http://www.theforce.net/story/front/Lucas_Iger_At_Disney_World_For_Huge_Announcement_151736.asp