As most have already heard, GTA IV has been delayed till Q2 2008. Speculation is running all over the internet as to the exact reason for this delay. As far as gamers knew, everything was fine at E3 and on track for a big October launch.
As reported earlier this week, XF had learned about certain future titles requiring the 360 HDD for data caching, but hadn't received any specifics on which games and when this would happen. Yesterday, when XF got word of GTA IV being delayed, we had to call our source. Apparently Rockstar wants GTA IV to give a seamless experience with load times limited as much as possible and void of loading whenever possible. This requires a HDD according to our source.