The big news today is that Jane Espenson—a writer best known, perhaps, for her work on Buffy the Vampire Slayer, but also with significant writing and producing credits on Battlestar Galactica and Caprica—will be joining HBO’s Game of Thrones as a freelancer writing the sixth episode. The news was broken by Maureen Ryan of the Chicago Tribune.
In the course of it, she also confirmed previous reports that Bryan Cogman would write the fourth episode and that George R.R. Martin would write an episode in the series. She added an additional piece of new(ish) information, as well: Benioff and Weiss will write the remainder of the episodes in the ten-episode season. While the original plan seems to have been Benioff and Weiss to write all the episodes but the one GRRM wrote, when the news of Cogman’s writing chores were announced this cast into doubt just how many more scripts they would personally pen. Now we know.