ImpactedQQ listed some pointless things but um yeah he's newb. new game modes added like Challenge Quest (MORE CHALLENGING)... new bosses added to the old Quest you know of (called Palmpow). lot of new items added in the bounty shop as well as the item mall (where you have to pay with real money).
You might remember $1 = 10 g coins. Well, 1 g coin = 10 Aeria points (It's the same value just a different virtual number).
GunZ 1.5 thingy basically a patch where they changed massive distance, this info would be useful to you if you're into Gladiator games. You know, changed some bugs up. Hacks are still easily made and GameGuard still can't stop it all, without the community's help that is (report using ticket)