His quote is specifically referring to heroic and raid achievement mounts.
Helps when you don't chop it up and leave parts out.So for example the achievement for completing all the raids on heroic that usually offers an individual mount. We’re trying to make sure that mount is different than the mount that you get for the dungeon hero. So if you remember back to Cataclysm it was essentially a protodrake with different colors. So what we are trying to do here is trying to create mounts that have a different look for each one. That’s not going to be everywhere. Obviously we’re still going to have mounts that have multiple colors and will give the mount in different ways, but I think the goal is to make sure that if you get a mount like that you feel unique.
Now lets compare that to your "quote"
yeah..."we are totally gonna have HUNDREDS of new mounts. They will not just be recolored old mounts, we swear!" - Official blue lie