Standard and Wild game formats designed to put a greater emphasis on most recently released cards.
Heroes get into the holiday spirit and free cards on offer.
Will include 132 new cards featuring Azeroth's finest knights and champions.
Pre-purchase The Grand Tournament card packs in a special 50-pack bundle from next week.
One of a host of new Heroes which will be sold for $9.99.
An apology from Blizzard for the patchy game access last week.