User blog comment:Zaralyyth/The Sad Truth/@comment-210608-20120605094021/@comment-210608-20120605210423

I don't think we can state with certainty exactly how the seasons will correspond to the books at this stage. The producers have said that they do not intend to follow a one book per season format but not specifically that A Storm of Swords will be adapted into two seasons. Obviously adapting A Feast For Crows and A Dance With Dragons is a big task but I'm not sure that even the writers no exactly how they will handle that yet.