The dx11 is currently broken if you are using nvidia. The game is PHENOMENAL however. It's exactly like deusex 1 (well more so in terms of choices and outcomes. Oh and better gunfights if you choose to go that route). There's so many rooms, places to hack, info to find, terminals, people to talk to (you can talk to everyone), different outcomes depending on how fast you got there/decisions and so on. I think i might buy two copies just because i'm loving it so much.
Edit: So i've been playing it for a few more hours. Forget the witcher 2, this is the GOTY. The sheer amount of choice/effect I have in the first mission (included optional objectives which also heavily impact the outcome) and ways to approach the enemy is awesome. Also as soon as I completed the first mission and came back to central there were a ton of quests/requests and things I found out hacking around. I couldn't have asked for a better deusEx game.
I did not expect it but this really lives up to the DX name and surpasses it. Oh and one more thing: on deus ex difficulty you will die in a couple of shots. You really gotta stradegize if you choose to go guns blazing (i choose stealth instead).