Hideo Kojima has said on more than one occasion that Metal Gear Solid 4 would be the last game in the canon. Then again, he said the same thing about Metal Gear Solid 3: Snake Eater and we all know how that ended up. Without saying specifically that Kojima has changed his mind once again, Siliconera reports that Konami has registered the title Metal Gear Existence on the Japanese Trademark Database along with the image attached to this post.

The only thing left to wonder is what ever happened to the rumored Metal Gear Solid 3: Revolver Ocelot?