So we are getting 4 new classes included in brand new chinese Faction.
Also a new Game Mode 4v4 Siege.
Armor atleast for Warden was teased, but probably others will get new sets too.
Also game is free if you download it this week. (Starter Edition).
All in All it's very good, but I'd rather have balanced characters first and then get new ones. Right now there are few characters who are completely in the bottom tier of their own.