Well, it's the year of the rat that starts on Thursday, I think. Therefore I'm pretty sure the minipet will be a rat (if any). Hopefully not the fat ugly ones that run around in the main cities since EN was released.

After the rat, we'll get the year of the cow and the tiger. No lions, no snots, I'm afraid...
:p


EDIT: Celestial rat, it will be:
www.guildwars.com/events/ingame/canthannewyear2008/default.php