I know that there are six mounts that you can get by reputation per faction
I know that there are six mounts that you can get using garrison (may someone explain this, I havent played the BETA)
Completing the Glory achivments (dungeon and raids) give you 2 mounts respectively. (The one that you get from the Glory raid achivment is a Gromm)
Challenge mode silver gives you the Yeti Mount
There is a mount that you craft by Tailoring and other with Leatherworking.
What other mounts you can get in WOD and how?
I just want my 250 mount achivment, and I only have right now (MOP) only 209