Unfortunately, I don't think it's a foregone conclusion that there will be any Star Wars Weekends in 2005. When Episode 2 hit theaters in the spring of 2002, George Lucas chose to forego SWW in favor of his own publicity events. If I recall correctly, there was only one "weekend" in '02 (mid-May), and it didn't come close to approaching the scale of years before and after.
We'll have to wait for an official announcement to get the scoop on any 2005 events.