I didn't have much time to play recently but from what I experienced the patch balanced guns very nicely ,even though it means that my M16 is no longer 2 bursts killing machine on any distance. The handguns are especially nice surprise. You can actually get kills by using M9 now , which means that there is a bit of diversification when it comes to equipping your secondary weapon, gone are the days of 1911 exclusivity.
The tracer got nitro boost (sometimes equipping smoke perk on vehicles makes a difference between losing and winning now). Specact kits look cool (all black M95 is my fav now!). Overall the game feels bit more unpredictable when it comes to "loadouts" people use (no more teams full of M60 medics) and that is a very good thing. Last but not least, absolutely NO LAG in games I was in after the patch (maybe better matchmaking system was deployed or I was just lucky).
Some minuses, "the fence bug" on isla innocentes is still on. The points you score after being killed still don't count toward your result. The "loadouts" don't save sometimes (very annoying and time consuming). C4+UAV combo is still available and popular in Rush mode.
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