After the reveal of Metal Gear Rising: Revengeance, Metal Gear creator Hideo Kojima sat down to discuss the game and also revealed an idea that he had for MGS5.
Hideo Kojima said that one of the ideas he had originally had for MGS5 was a game starring The Boss and her Cobra Unit from Metal Gear Solid 3: Snake Eater. The game would’ve been set during the invasion of Normandy during World War II. (In MGS3, The Cobra Unit being a part of World War 2 is mentioned during the story.)
Kojima said he presented his MGS5 ideas to the team during the Summer of 2008, but younger staff members were resistant to working on a major title like MGS5 without his involvement. Kojima had been in the planning phase of a new project and wanted the younger staff to take over. The idea for Rising was proposed then and the idea of a Raiden side story made the team feel more comfortable than trying to tackle MGS5.
Kojima did not say in the interview whether or not the idea is the concept behind MGS5 or another Metal Gear title that Kojima Productions may be working on.
The 20+ minute video interview also discusses what happened to MGS: Rising and how the collaboration with PlatinumGames happened in the first place. For Metal Gear fans who have been following the game, the interview will prove to be very interesting.
Metal Gear Rising: Revengeance is in development for PlayStation 3 and Xbox 360.