Two more minipets are rumored to be released in Wrath of the Lich King. As many people hoped, there will indeed be pet penguins to collect. At least two different types of penguins have appeared so far—one pictured at right. Additionally, there are rumors of a scarab beetle pet, similar to the scarab minions created by the Crypt Lord hero-unit from Warcraft III.
I don't know about the rest of you, but I'm stoked for this next expansion.