Shifting Perspectives a week ago, but it appears Blizzard is already doing something about the tauren cat form -- albeit not very much. Many tauren have long complained that their cat form is much uglier than the night elf version (compare for yourself here), and while these changes aren't comprehensive, at least they're a tiny step in a new direction.
Beaux on the US forums showed everyone how, in patch 2.3, Blizzard has modified the tauren cat form's face to look more like a lion and less like a monkey, and changed the neck of the lion so that it doesn't look so hunchbacked as it moves. It's not as pretty as the tauren cat form suggestion submitted in Blizzard's art contest, but it'll do for now I would think.
[Update]: Our reader tmklein supplied us with some interesting links for what the EU player Andrige thought the various forms should look like -- all with a distinct visual style. Would you like this sort of change?