Blizzard had previously promised new pets Lil' Ragnaros and the Moonkin Hatchling before the end of November and it has delivered, just barely. Right now, you can purchase both pets in the pet store. Lil' Ragnaros will ignite nearby critters, do his famous submerge, and even counts as a cooking fire! The Moonkin Hatchling comes in Horde and Alliance versions, depending on your faction, and will plant flowers around your feet and even /dance with your friends. Check out the pet store here.