A new class? Highly unlikely. We just got monk. Even tho, there is a slight chance of a new talent for buffing, they might just might maybe go for a class that focuses just on buffing tho.. That would be very boring therefor highly unlikely.
A new race? Likely.
Bring back Legion? Errr.. Am I the only one who did not like TBC?
- Level cap raised to 95.
- New race models including worgen and goblin(Now before you say they won't change worgen and goblin; They have said several times they want to re-do the worgen and goblin because they were not satisfied with what they got at launch of Cata.)
- New race(s).
- New continent; Why you may ask? Blizz has also said several times the majority did not like visiting azeroth again(People loved Northerend and Outland). People like new continents, therefor the possibility of a new continent is something that could happen. Or if they really are going for a place that already exist they have to remake so much it feels new.
- New graphic mechanics.
- Updated NPC models
- And alot of other new things to come.
Also; Am I the only one who wants to see the return of Lich King and the scourge?
We never actually saw the scourge invade azeroth so why not make that?
But what do I know eh?