The IGI2 SP demo isn't officially available until the 16th, but it's on the cover disks of PC Gamer here in the UK, and my sub copy turned up this morning. I've just installed it and had a quick play - I'm guessing it'll be leaked to the usual download sites pretty quickly.
I played the original IGI and thought it pretty fun, although the inability to save (and the respawning enemies) irritated me immensely, especially later in the game - it's one of the few games I never actually finished.
Anyway, the demo is a fairly standard "sneak into a base, avoid the guards and cameras, get across a river" type of thing, very similar in style to the original.
And that's the problem. It's not just the style - from the Demo (which is labelled "90% complete", so I guess there's still hope) this game is almost identical to its predecessor. The graphics aren't noticeably improved. The architecture has a similar feel (and the level of detail isn't substantially better). The models and animations are, as has already been mentioned in this thread, pretty damned substandard, especially when compared to something like NOLF2.
Worst of all, there's *still* no save option. Once again, they've doomed us to having to restart from the beginning multiple times in order to complete a level. Last time everyone assumed this was to make the game seem longer, as Innerloop hadn't had sufficient time to make more levels... but if that's true this time, I've no idea what they've been spending their time on, as it certainly doesn't seem to have been the game itself.
I really wanted to like this game. I was hoping for something like the original, but with the irritating points removed. I can live with the dated graphics (after all, it's the gameplay that counts, right?) but the fact that they've ignored the repeated cries for a save function will probably put me off.