This page on the framed FXLabs Website reveals that a PC edition of The Lost is in the works in addition to an Xbox version (thanks Frans). This comes just as the PS2 edition of the Lost earned the dubious distinction of landing on IGN's Top 10 Vaporware List, one of those regularly scheduled opportunities to mock TeamFortress 2 and Duke Nukem Forever. Here's word on the project:

An action/horror game for the PC and Xbox. "The Lost" pits players against the denizens of the underworld as they make their way through an incredible array of visually stunning environments! Fight a wide array of creatures, control up to four distinct characters, and lose yourself in the compelling storyline and eerie music. This game is being developed as a joint production between Irrational Games and FXLabs Studios.