Lindelof and Cuse at work on new Lost ARG

According to Variety, the Lost producers are already working on the next Lost ARG for the post-Season 4 hiatus:

"Lindelof and Cuse are already busy plotting the off-season interactive campaign for season five of "Lost." But they also employ a brand manager to handle at least 30 different outgrowths of the show, including mobile games and player platform games to more obscure licensing."