During his panel on Shared Worlds, GRRM mentioned that he has a deal in hand with the Sci-Fi channel for a pilot for Wild Cards. The contracts are not yet signed, but the ball is in his court. The only details I remember is that the pilot would be two hours and that the long-term plan is for a weekly series. GRRM would not be involved except in the most cursory of fashion. ("My role would be cashing checks").