Rocksteady will be releasing its next downloadable content installment for Batman: Arkham City on December 20th, according to a Tweet in the Arkham City News Twitter feed. A Batcave challenge map will be included as part of the DLC bundle, as well as maps for Iceberg Lounge and Joker’s Carnival.

While the release date has been set, the pricing has not. We suspect, however, that it will be offered for 800 Microsoft Points or $10. We will have to wait till December 20th to see for sure.

Catch up with the Arkham City News Twitter Feed here.