Mania is excited because they're a new form for pets, and they may even be a new family. But I'm more excited because the raven, in its current form, actually also is used as the Night Elf Druid's flight form. Finally, I get my very own Druid to run around and tank for me. Unfortunately, it won't be able to switch into bear form, and Regrowth isn't an option, either, but it will definitely be nice to have another bird of prey in the mix.
No word yet on which abilities they'll have, but if they follow Owls or Vultures, they'll probably come with at least Claw, Dive, and Screech, and maybe Bite if we're lucky. If I can get one that actually says "Caw," or even "Nevermore," I'm totally sold.