Metal Gear Solid 6 is sadly never happening due to the falling out between Konami and Hideo Kojima, and the lack of a sufficient story to tell.
Will there be a Metal Gear Solid 6? - Quora
Metal Gear Solid 6: Will We Ever Get A Sequel?
Metal Gear Solid 6: 10 Ways To Make It Work Without Kojima
I know that this will probably never happen, but now that Metal Gear's 35th anniversary is soon, I would love to see a Snake skin in Fortnite. Thoughts? : r/FortNiteBR
Why Metal Gear Solid 3 Is The Right Game To Remake First - IGN
The Best Metal Gear Games, Ranked - GameSpot
Raiden, Metal Gear Wiki
Torture Room - Metal Gear Solid Guide - IGN
Will there be a Metal Gear Solid 6? - Quora
What are the Chances Kojima is Working on Metal Gear Solid 6?
The Best Metal Gear Games, Ranked - GameSpot
Metal Gear Rising: Revengeance : Konami of America: Everything Else
Is PlayStation Preparing Us For Metal Gear Solid 6?