This from Gauntlet's Coming Attractions page, so I thought I would start a thread.

Stephen King’s Battleground: This, too, will be a definitive collection of Stephen King’s classic short story with Richard Christian Matheson putting together this awesome collection. We start with King’s short story and then move to R.C. Matheson’s script for the opening episode of “Nightmares and Dreamscapes” which starred William Hurt and was directed by Brian Henson. Henson will provide storyboards used for the episode which won two Emmy awards. We will have further details as to whom will be contributing material to this unique collection in early 2010.

This will be a summer or fall release
My guess is it's going to be like Riding the Bullet from Lonely Roads books. The new stuff will just be the television adaptation of the story by Richard Christian Matheson, and King would probably only sign the Lettered Edition. Who knows though as it's all speculation at this point.