From what I can tell, SMGs have gotten a MASSIVE boost and are really really good now, especially the UMP. Hell, they even knocked off a ton of recoil from the Tommy Gun. The SLR is stupid powerful, even if it has higher recoil. There is a hidden update that wasn't in the notes for the AKM, and that its horizontal recoil has been reduced by a ton. While it still kicks vertically, it does not flop around side to side nearly as much anymore.
Some good shit. I wish they kept the new circles during that one update, but nope, people had to bitch about that.