Apparently, the new opus will be dubbed S.T.A.L.KE.R.: Clear Sky and it will take place one year before Shadow of Chernobyl. The game world will consist of 50% new territory and 50% of the previous game's territory rendered "twisted" and "more hostile." Clear Sky's storyline will involve a war between eight factions of "stalkers" that dwell in the Zone; the player will also be able to join these factions. On the technical side of things, GSC intends to improve the game's artificial intelligence, physics, and virtual PDA. A DirectX 10 version of the title is a possibility, as well.