So let's go skim the patch notes quickly -- /flick flick flick -- and try to answer the most important question first:
Is Tauren cat form still in the game?
Man, %*#$ this patch.
Leaving aside this EGREGIOUS OMISSION, we're going to take a look at the preliminary Druid changes in patch 3.1 past the cut here, and courtesy of Michael Sacco and some data-mining gnomes, we also have the Druid Tier 8 shoulder graphic, which is pretty cool and reminds me a lot of Tier 5. I'm also seeing some undocumented changes in the game files off MMO Champion, but I'll have to examine those later today. I haven't been able to get on the PTR yet, so I can't confirm whether these changes have actually gone live on the test realm.