Amazon.com has a listing for a Star Wars Role Playing Game Saga Edition for March 2007.

After the Amazon.com entry was posted on the WotC message boards, both Gary M. Sarli (the author of WotC's "Jedi Counseling" web column) and Rodney Thompson (who is listed on Amazon as an author of the book) confirmed that the product exists.

This seems to fit with the description of the Star Wars Miniatures seminar for GenCon 2006:

Want to find out what's coming up for the Star Wars Miniatures Game? Come to this discussion with the Star Wars Miniatures design team and find out the latest information on the starships set, competitive play, the RPG, some surprise announcements, and more.

This is the first time that the RPG has been mentioned in the description of one of WotC's GenCon seminars since 2003.