Reports from the Internet suggested that a demo for Metal Gear Solid 4: Guns of the Patriots would be released on the PlayStation Network next month, but Kojima Productions Assistant Producer, Ryan Payton, has revealed that the company isn't planning a demo release.
Rumors of a demo originated from PSW, a magazine published in the UK. But you should disregard those reports as false information.
Payton shot down these claims in his recent podcast by saying: “that's not the case".
Metal Gear Solid 4: Guns of the Patriots is set to be released on the PlayStation 3 in Q2 2008.