A new item has been introduced that can be used to upgrade the quality of Battle Pets: Battle-stones.
◦Battle-stones are available in two basic types, general purpose Battle-stones that can be used to upgrade the quality of any pet, and family specific Battle-stones, which can only be used to upgrade pets of a specific pet family.
◦Battle-stones are available in two qualities: Flawless Battle-stones can upgrade pets directly to Rare quality, while Polished Battle-stones will upgrade a pet to Uncommon quality.
◦Players will have a very small chance to obtain a general purpose Flawless Battle-stone after winning a match against wild pets; defeating higher level opponents increases the chances of obtaining a stone. These valuable items are not soulbound, and can be sold on the Auction House.
◦Family specific Flawless Battle-stones can be found in the Sack of Pet Supplies obtained from performing Pet Trainer quests, and are Bind on Pickup.
◦General purpose Polished Battle-stones can be purchased for 1000 Justice Points.
http://wow.joystiq.com/2012/10/11/world ... tch-notes/