Rockstar's previously announced episodic content for Grand Theft Auto IV will begin in 2008, it's stated in a recent Take-Two financial report.
Take-Two's report reaffirms that GTA IV is due to release simultaneously on PS3 and Xbox 360 this October.
It's recently been speculated that the sequel will use the euphoria engine, technology that lends a dynamic and life-like element to in-game characters.