Upon launching the game, it was automatically updated to version 1.1, I can't tell exactly what the update was, as there was no files stating the specific update.
Graphics Options
Resolution
VSYNC
High - Very High -Extreme
No indication of whether you are running DX11 or DX9 nor any other options to tweak graphics settings.That said, the game still runs pretty smooth on Extreme even though I do not have a very powerful GPU.
My specs
Win7 64 bit
Intel Core i7 930 @2.80GHz
Ram:6GB
Nvdia Geforce GT330 4GB
Average FPS
Extreme - 20 to 30
Very High & High - 35 to 60 (not much difference between this 2)
Cryengine 3 also loads a lot faster as compared to the original Crysis & Warhead.
To me the game looks amazing, the Urban Jungle looks really good, improvement in textures/lighting/shadows over the original Crysis. You still get to see some very realistic foliage/trees/leaves/grass at certain areas. The game looks good & runs great on any settings, so ppl who don't have a very powerful rig can most certainly enjoy it too.
Game play wise, it's very similar to Crysis 1 but you get a lot more moves like sliding, power kick & stealth kill (one of the best moves in the game). You can also grab an enemy by the neck, press the melee button and you will twist his head n break his neck. Lean functions has been simplified to holding mouse 2 which you can activate when you are in a corner or hiding behind cover.
So far I've clear one mission and I say the game does not disappoint in terms of graphics and game play. Story wise, can't comment much until I've completed it.
Conclusion: Fans of the original Crysis should still find this an enjoyable game. Graphically, still one of the best looking shooters around.
Note: I am only sharing my thoughts on the single player, haven't got the time to try the multiplayer but I think it shouldn't be much different from the demo.