From Martin's "Not a Blog":

Well, the HOLLYWOOD REPORTER has spoiled part of my fun. How can I properly torment my readers if they're going to go around printing the news?

http://www.hollywoodreporter.com/hr/content_display/television/news/e3icaec2feffc977edcd7939413cf46b0d9

Yes, it's true. Jennifer Ehle has been cast as Catelyn Stark. 

From Martin's Blog:

Well, Reuters has the story out already, so there's no longer any reason for me to keep mum. Yes, the rumors you've been seeing all over the web the last few days are true. Another huge piece has fallen into place for the HBO pilot of A GAME OF THRONES -- we have signed Sean Bean to play the part of Lord Eddard Stark.

For the movie fans out there, Sean Bean needs no introduction. I mean, what the hell, he was Boromir and he was Sharpe, he was terrific in both roles, and in a hundred other parts besides. I can't imagine a better Ned. The deal took some doing, so my fingers have been crossed for a month now (and boy, that made it hard to type), but now it's done, and I'm thrilled.

From Martin's Blog:

"I almost hate to say anything here, for fear of jinxing it... but for what it's worth, the last six weeks or so have been the most productive period I've had on A DANCE WITH DRAGONS in... well... a year at least, maybe several. In the last three days I've completed three new chapters. Not from scratch, mind you, these were all chapters that had been partially written, and in some cases rewritten, for months if not years. But they're finally done, and I've just reread them, and I'm almost convinced that they're Not Crap.