Besides all the arguments/discussion about commo roses, and hit markers etc, I have to say I am really looking forward to this game, the graphics look incredible (especially if - like me - you currently have a pc which is about 7 years old and can just about play things like HL2 and BF2, the leap to the graphics of BF3 will be extremely eye-opening and amazing.
I will be upgrading my pc shortly before this comes out, I've been planning an upgrade for a while but waiting for BF3 has delayed it a bit, so I can get the best I can afford nearer the time of release.
I am pleased to see that they will include suppression etc as I tend to play as a support gunner and to be able to be more of a useful member of a squad by being able to pin peopole down with constant suppressing fire would be great!!!