At level 10, you will get to choose between horde and alliance.
Pandaren Classes: Hunter, Mage, Monk, Priest, Rogue, Shaman, Warrior
Racial - Epicurean - Increase the stat benefits from food by 100%
Racial - Gourmand - Cooking skill increased by 15.
Racial - Inner Peace - Your rested experience bonus lasts twice as long.
Racial - Bouncy - You take 50% less falling damage.
Racial - Quaking Palm - You touch a secret pressure point on an enemy target, putting it to sleep for 3 sec.
Monk New Class
Brewmaster - Tank spec
Mistweaver - Healer, a healer who can stand up in melee and will let players experience a "new healing style"
Windwalker - Melee DPS
This is not a hero class, and it will start at level 1
The class is very martial-arts based
Lots of monk-only animations, the healer and tanks will have different stances they can stand in, etc ...
Monk Races - All of them except Goblin and Worgens
Sacado de : http://www.mmo-champion.com/content/2516-World-of-Warcraft-Mists-of-Pandaria-Preview-Panel