Blizzard has announced today the pandaren mount coming in Mists of Pandaria is called the Dragon Turtle. They're large, scaled turtles with a bit of a dragon-like feel to them. They are ground mounts, which will be needed to roam around Pandaria while leveling from 85 to 90.
While Blizzard doesn't explicitly say that these will be obtainable by other races through a reputation grind, it's safe to assume that'll be the case. I for one can't wait to get one on my human warlock.
Check out Blizzard's full announcement post after the break.