Pictures taken from the Hollywood Video SKU (POS system) reveal that both Metal Gear Solid 4 and GTA IV are set for a release before December of this year. Both also have a retail price of $59.99 slapped upon them.
MGS4 is apparently slated for release on 11/01/2007.
GTA IV is confirmed for 10/16/2007 release date.
These images also show two new Wii games, Bonk and Balls of Fury which is a ping-pong title.