So, in the latest beta, the un-glyphed travel form is now the new Stag form with updated graphics (see video on mmo-champion). I was really excited to get into beta and try it out. Apparently, other people were excited, too.
It looks like we may end up with a glyph for being able to have your friends ride stag form and the datamined files suggest there may be a future glyph for being able to use your old cheetah form, though neither glyph is functional in the current beta build.
I just wish it went faster so that I could use this instead of ground mounts in MOP!