I'll wait and see what the annoucement is today. If it's not the PTS, then I'll post the email later. Basically what it said was that we would be testing Thieves, the new dungeons (with no gold to buy EXP books to get to 60 for the dungeons? yeah right), the new FP system, and a "Revamped Item Shop".
People have been speculating on what that could be, like maybe selectable avatars, or clone and slotted avatars with emblems. We'll find out soon enough.