Apparently MoP is going to add more mounts than any other expansion did.
http://www.wowhead.com/news=204699/mists-of-pandaria-new-mounts
MoP also is going to allow you to run and upgrade your own farm and harvest crops with the Tiller's Faction.
"The Tillers faction will let you run your own farm! The farmer's market will provide daily quest to improve your farm every day, you will be able to clear plots of land and plant things like cooking ingredients, herbalism nodes, gifts for NPCs to build your reputation... etc.
This is the farmer's market here, which is the social hub of the Valley of the Four Winds.
Every day farmers will come to the market with different problems, providing daily quests.
You will help Farmer Yun fix up his overgrown farm, which will show your progression with the faction.
You can clear plots of land and plant things like cooking ingredients, herbalism nodes, gifts for the different NPCs to build your reputation. You then come back the next day to harvest what has grown.
You will be able to decorate the farm as you gain reputation. For example, you can add some pigs and slop, some other animals, and grow an apple orchard."
