There are some things we can rule out with when musing over what George R.R. Martin might develop now that he has a two-year contract with HBO. Certainly not something comedic; he's not that type of guy. A Game of Thrones prequel of sorts? Maybe, according to an interview with IGN.
It's not the only idea that's been talked about, of course, but it's one of them. What do you think? Would you be interested in a prequel based on his Game of Thrones novellas?