Rogues, for example, get a new talent at level 100 called Venom Zest, for instance. However, since the video in question didn't actually mouse over said talent, we don't actually know what it does. I like to think it makes venom a delightful accent to any meal. But that's unlikely if you've ever actually eaten with a rogue.
Head on over to Wowhead and take a gander at all the new talents at their talent calculator for Warlords of Draenor. With Celestalon tweeting about an upcoming flood of new information, you should probably keep an eye on it.