Konami already announced the limited edition Metal Gear Solid 4 Sony PS3 console in Japan. It is apparently already sold out there. The Sony Playstation blog has now revealed that the the MGS4 mate grey Sony PS3 console will also be available in the United States.

Sony tries to make the most out of the Gear Solid 4: Guns of the Patriots release and will offer a Standard Edition, Limited Edition Sony PS3 MGS4 Bundle and the Limited Edition PLAYSTATION 3 Hardware Bundle (with the grey PS3).
Additionally Sony features the "Metal Gear Saga Vol. 2" free pre-order bonus offer DVD with MGO Beta Unique Product Voucher Code insert. This is a special offer, made through participating retailers and store locations, for customers that pre-order either the MGS4 Standard Edition or the MGS4 Limited Edition.

MGS4 will be released on June 12th.
More details on the Sony Playstation Blog. The Playstation Blog promises a surprise on Monday. We will see what that is.