This is leaked based on a document that was given to my by one of the artist in blizz, basically:
- Old Gods will apear.
- Azshara will NOT apear in the Xpac.
- Sylvannas will NOT DIE, rather she is being corrupted by the lich king, becoming what she mostly fear.
- New talent system with 4 specs per class (like druids).
- No new classes, quite the opposite: hunters and locks will dissapear. No one likes locks, so they are now merged with priests... No more bows/guns so they are merged with rogues.
- PvP based expansion: more WPvP as the xpac focus on a war between horde (orcs) and allies (humans/dwarves mostly) storywise.
- Elves have their own private war: on alliance they are with the worgen on an Emeral Dream shortquests.
- Undead and B elves are facing the new scourge menace (actually sylvannas plan to be the L queen)
- No new Bgs, just WPvP: arathi, barrens, silverpine/gilneas, desolace.
- Winterspring revamped
- New (even more) darker nights on azeroth (lots of time in this).
- Ragnaros will come back (again).
- Guldan apears in a dungeon, then he flies in a unicorn... or fel-unicorn.
- Gnomegaran is the first Raid with another Zul Gurub (retaking capitols, yo)
- Garrisons are back, but worst.
- No shipyards (yet)
- No flying in azeroth. (they will take it down)
- New mini game: the litlle soccer league (because, why not)
- No more mastery/crit/versatility/haste/multistrike/b armor... instead just normal stats.
- Resilence for both PvE and PvP (instead of B. armor/versatility)
- New Proff: Vajazzling (i didnt spell it wrong)
- No story for 7.2, still they dont know wtf they are doing.