In the original build, the mount's tooltip indicated that it'd be able to carry an ally, but it seems to have changed. The new tooltip has been updated to say that instead, the claws of the mount can be used by herbalists to pick herbs. Now druid herbalists aren't the only ones that get to have all the fun!
We've been waiting a long time but keep in mind that things on the PTR are subject to change. I'm trying not to get my hopes up -- still -- but these recent updates are making it difficult not to. We'll keep our fingers crossed!