Probably the only chance left this year for a new game announcement from LucasArts is at Spike VGA's on December 10. I don't think it's going to happen though. LucasArts had one game release this year LEGO Star Wars: The Clone Wars III back in March. Other that that bupkis.
I don't count Star Wars: The Old Republic either since LucasArts relinquished all publishing duties to EA. The only thing I know of that LucasArts has been involved with on TOR is the music. LucasArts definitely has at least 1 game in the pipeline though so I guess it's just a matter of when they choose to announce it.