Nice, they already have made schedule for their coverage.
Schedule of GTA IV coverage - subject to change:
Announcement & HD Trailer (March 29)
Preview 1: Welcome to GTA IV (May 25)
Preview 2: Gameplay, PS3 Version & More (June TBC)
Preview 3: Online/MP modes - (August TBC)
Preview 4 & Beyond: Details and further preview timing TBC!