I am hearing from someone who is playing it (haven't gotten around to it yet myself) that it is very good. They are enjoying it!!
Cant wait myself, I enjoyed Contracts!!
played the X360 demo but its said to be very similar to the PC version of the game.
having not played any hitman games before i found it quite Splinter Cell like in which you use your surroundings to either be silent or deadly with guns blazing.
graphically its very nice with all kinds of bells & whistles any new game should have. control wise i cant comment coz i use the gamepad on the console and not a keyboard/mouse combo.
overall reviews have been very positive, check out www.gamerankings.com and see it for yourself.
I love the franchise. ( sat for hours playing missions trying to get a full silent assassin rating. installed blood money the other day. and it seems they have moved away from the whole "silent assassin" and went with. kill the target no mater what it takes.
there is a cool feature to upgrade your weapons too with the cash u get from missions.