Confirmed by Martin himself on his personal blog, the author reveals that Universal Cable Productions has acquired the rights to his superhero anthology series, Wild Cards.
Similar to Game of Thrones, there is no one main character, as Wild Cards follows the separate stories of tons of characters.
The adaptation of another Martin series of novels is in the works, this time centered around the adventures of a huge cast of superheroes.
The ending of the critically acclaimed Game of Thrones is finally within sight, so it makes sense to fill the gap with another series from the mind of author George R.R. Martin.