I think its really mean of HBO to make us wait until Sring of 2012 for the next chapter in this saga. If you're like me and can't wait, purchase the books. If you go to Amazon (http://www/amazon.com), they have a great price on the four book set.
Finished reading the first four books - they were awesome! Now when I read about casting news, e.g., I know the characters they're writing about.Waiting anxiously for my copy of "A Dance With Dragons" to arrive.