We're currently working on the website layout and collection tracking for MoP. At the moment the goal is to include all the new pets (including wild ones) into the database. Details are still being sorted out, though, so things aren't set in stone yet.
Lysi wrote:I'm guessing they'll still want an armory import option to update your collection, so exactly how they'll do it might depend on how WoW lists collections in the armory after MoP..?
Absolutely, the WoW armory will definitely play a part in how we'll handle the changes and additions coming in MoP.