I can't wait for Tekken 4 too, I haven't played the import but from what I've heard its just a frickin awesome translation.
Roadrhino, the grape vein has it that Bungie is developing an online based FPS based on the Halo engine, for when the XBox Network goes live. From what I hear (not that that means ANYTHING), it has nothing to do w/ Halo story wise. But Bungie games often make references to each other, so who knows. I'm sure it will kick ass, that's for sure.
Vene I don't thing any dates have been set for much of anything, I would say Christmas for some, 2003 for others. The E3 is in a month and a half, that when everyone shows there latest and fattest shit, so you'll get more answers then.
Tekki, oh man, Tekki is a mech-game (ala mechwarrior), but very, very unique in many aspects. For starters, that game comes with its own proprietary controller - with two joysticks and some 80 buttons, switches, dials and all kinds of shit.
Check it all out here:
http://gamespot.com/gamespot/stories/previews/0,10869,2860083,00.html
Those of you with fast connections, check out the movies for it, it looks great, and it has a very very solid dev team behind it.