Here's what I've posted on other sites:
FYI, d/l in 20 mins from nvidia zone!
Plays more like UT than 2k3, which is a good thing, IMHO. (2K3 felt too Q3-like!) Heck, even the sniper rifle is back, although w/some neat gunpowder-smoke after-effect and longer rate of fire. (Again, a good thing!) And that UT music remix is oh-so nostalgic!
Eye-candy is sweet and butter-smooth - runs great @16x12 on my AXP2600+/512MB/9500pro non-oc/EAX enabled.
Only played two game types so far:
DM - same old, same old, which means more of the same great UT DM we know and love.
ASSAULT - now this is more like it! Missed it in 2K3, and am ecstatic that it's back, and better than ever! This demo map puts UT-Train to shame! Love the multimedia mission briefing - great for n00bs! This map plays as well as the classic AS-Bridge, w/multiple objectives. Also love the objective arrow (a la Crazy Taxi).
In short, if you loved UT and hated 2K3 (esp. DM and ASSAULT), then 2K4 will be a must-buy! If you prefer the slow pace and tactical feel of ET/AA/BF/CoD, then move along - nothing to see here. But if you want frenetic, high-octane gameplay, 2K4 is the king of FPS! (Crystal Meth not included, as one other reader commented...)