Link: http://scifiwire.com/2009/11/game-of-thrones.php

Well, we don't have the next book - but the first book or first part os the first book is finished -

Filming on the pilot for Game of Thrones, adapted from the fantasy novel by George R.R. Martin, has wrapped, according to Visual Effects producer Julia Frey. The three weeks of shooting took place in three different countries and involved a cast of two dozen and more than 100 extras.

Cast members include Lena Headey as Cersei Lannister, a woman of royal blood, Peter Dinklage as Cersei's brother Tyrion, Nikolaj Coster-Waldau as Cersei's twin, Jaime, Sean Bean as aristocrat Ned Stark, Jennifer Ehle as his wife, Catelyn Stark, and Mark Addy as King Robert.

HBO is reportedly expected to give its decision on a green light around March

I just hope they do it justice, it's a great story - lets not murder it like so many others eh?