Cold, Cold Heart is an open-world, narrative-driven chunk of DLC for Batman: Arkham Origins, and it's due out on April 22 for Xbox 360, PS3 and PC. Cold, Cold Heart tells the backstory of classic Batman villain Mr. Freeze in a brand new mission, and it gives Batman himself a new suit "that will actually change gameplay and help you be more resilient" against cryogenic weapons, according to WB Games VP of Production Ames Kirshen.
WB prioritized work on this DLC over fixing bugs, Community Manager "Mercury" said on the Arkham Origins support page earlier this month, and the studio canceled the Wii U version of Cold, Cold Heart in January, citing lack of demand. Since it was part of the Arkham Origins season pass, Nintendo of America offered full refunds to anyone who bought that bundle, even though some pieces of DLC had already launched.
And to those who had already guessed that Cold, Cold Heart would feature Mr. Freeze: The Penguin's heart is probably pretty chilly, too. It totally could have gone either way.