So we know from the Reddit AMA that they're working on Guar mounts, and it's a safe bet that they're at least brainstorming other mounts. But as we all know, leveling a mount takes about two months real time due to artificial time gates. I'm sure many players have fully leveled a mount or are at least on their way.
So what happens when new mounts come out? Are they already max level? That seems a bit too good, no one would use old mounts. But if they're level 1, then that seems really bad; surely "new mounts" is going to be a headliner for whatever patch it's in, are we supposed to buy/unlock these new mounts and then not be able to use them for two months because they won't be good as our old ones?
I think the best solution is that new mounts should automatically scale to the highest level mount you own when you buy them.