Green Ronin has announced a pre-order special for their A Song of Ice and Fire Roleplay Campaign Guide, the table of contents of which have been previewed recently. Those who pre-order the hardcover guide via the Green Ronin store will automatically get a free PDF document of the guide. The PDF seems to be available for direct order as well, for $20.
According to reports on Green Ronin’s own forums, the Campaign Guide does not seem to contain any notable new information on the setting, but it does contain significant amounts of statted characters from the novels.