From AICN:
HBO is turning George R.R. Martin’s series of “A Song of Ice and Fire” fantasy novels into a TV series. The plan is to adapt one novel each season, starting with 1996’s “A Game of Thrones.”

Writing the HBO version are Martin himself (who previously wrote on CBS' "Beauty and the Beast") and feature writers David Benioff (“The 25th Hour,” “Troy”) and D.B. Weiss (who authored a screenplay for the proposed “Halo” movie).

These are apparently very long and violent grown-up fantasy novels, with thousands of characters – the major ones quite flawed and complex - and lots of sex, violence and political intrigue.

Learn more of what HBO is up to here.
I've heard nothing but good about these books (really need to get around to reading them myself), so this should be good news.