Good news from Kisirani for those who like a little variety in their Shaman classes -- she confirms that Dwarf Shaman will indeed get brand new totems to throw down rather than the Draenei or Tauren models in Cataclysm, and hints that all of the Shaman races, past and future, will get a little differentiation in the sticks they stab into the ground. Unfortunately, she also confirms that Dwarven totems aren't kegs (that right there would have gotten me to reroll as a Dwarven Shammy first thing), but whatever they end up being -- my guess is something rock and/or hammer-esque -- I'm sure Blizzard's artists will make them look cool.
For Trolls, you have to think they're going to go voodoo (they'll probably use the Troll totems already in the game). Orcs, it would have to be something primitive -- maybe leather strung across a bone stand or something like that. And of course Draenei already have their own custom totems, and we don't really have enough of a hold on what the Goblins are like yet (trust me, we don't -- the race I played at BlizzCon was very different from the neutral race we know right now) to think what they'll have.
World of Warcraft: Cataclysm will destroy Azeroth as we know it. Nothing will be the same. In WoW.com's Guide to Cataclysm you can find out everything you need to know about WoW's third expansion. From Goblins and Worgens to Mastery and Guild changes, it's all there for your cataclysmic enjoyment.