Probably old news, but cyclingnews.com is reporting that the 2005 Ultegra will be 10 speed with a triple option. I'm sure Shimano are going to have a hard time keeping up with the demand...
LX will be like XTR/XT with dual control and crank/bb combo. Yes, Rapid-fire go bye-bye. Doesn't say if it will have a disc brake option, though. They should at least put an LX badge on the Deore disc brakes, IMO.