Yes OP;DR is coming out for Xbox360, PS3, and PC, though I suspect the Pc version might wind up being better since the Operation Flashpoint games are outstanding on the PC. I might add that it's biggest competitor ArmA 2 is supposed to be coming out in the Fall. these are in depth realistic combat simulators that are extreme examples of the phrase "combat simulator". Think America's Army x 10.
You will have to not only deal with a VERY realistic AI but also innocent civilians. There are a number of vehicles that you will be able to not only utilize but also drive and use yourself. These are very CLAN heavy games, so don't expect to jump on and think you'll mop up like in COD or any other FPS. I suspect that the sniping will utilize bullet drop and wind effects but I could be wrong.
The damage modeling looks like it will kick a**, so if you throw a grenade or place C4 you will be able ot blow out walls and kill those on the otherside. If you've played the original I highly recommend picking it up for the original Xbox or the PC. This is promising to be 846337340345 million times better.
OP: DR has been in development for 2+ years so it should be top notch.
edit: here's the website for Arma 2 the animations still look a little rough. There's a decent gameplay video on the homepage.
http://www.arma2.com/
Modified by Chaotic_Warlord at 10:25 AM 3/29/2009