Things could change but as it looks now...
For D&D I will be picking up Unearthed Arcana, Expanded Psionics Handbook and the Eberron Campaign Setting. I'll probably end up picking up Complete Divine and Races of Stone. I might pick up the new DM's screen. I haven't collected much FR products in the past several years but I'll at least look through Serpent Kingdoms since it's supposed to cover some areas never before detailed.
For the d20 Modern line, I'll definatley be picking up d20 Future and may or may not grab d20 Weapons Locker.
For Spycraft, I'll definately pick up any Shadowforce Archer releases and will most likely pick up some or all of the core releases.
For Star Wars, I'll probably pick up Ultimate Adversaries and may pick up another book or two. Whether or not that includes Geonosis and the Outer Rim Worlds or some of the old releases that I haven't got around to is hard to say.
For other d20, I'll definatley be picking up Green Ronin's Book of Fiends and possibly their Psychic's Handbook as well. I'm also fairly likely to grab one or two adventures from Necromancer Games, although I don't have anything specific in mind.
Finally, I'll likely be buying a number of packs of D&D minis, and possibly the Star Wars minis when they come out, if it looks like there's a decent chance of a Star Wars campaign ever happening.
Wow that seems like a lot. I also may be buying a house so I guess you can take all of the above with a big pile of salt.