An ex-employee supposedly confirmed that Hideo Kojima is working on the fifth Metal Gear Solid game. http://www.shacknews.com/onearticle.x/54402
There's not going to be any Metal Gear Solid 5.
There has been no confirmation of a Metal Gear and Metal Gear 2 remake. They are playable on Metal Gear Solid HD Collection in the Metal Gear Solid 3 portion, but thats the only thing that would be considered a remake right now.
chances are problaby not, there will be an Metal Gear Online though
If you mean story wise then I believe it goes: Metal Gear Solid 3: Snake Eater Metal Gear Metal Gear 2: Solid Snake Metal Gear Solid Metal Gear Solid 2 Metal Gear Solid 4 But I may be wrong, and that isn't counting either of the Portable Ops games.
No
There is an online component in MGS4 called Metal Gear Online.
metal gear solid1, metal gear solid 2 sons of liberty, metal gear solid 3 snake eater, and metal gear solid 4 guns of the patriots.
Metal Gear Solid, Metal Gear Solid 2: Sons of Liberty and Metal Gear Solid 3: Snake Eater
As of 2013, there are no plans to release Metal Gear Solid 4: Guns of the Patriots on the Xbox 360. Metal Gear Solid 4has been announced as part of the Metal Gear Solid: The Legacy Collection on PlayStation 3. Given that the next generation of video game consoles will soon be announced, it is unlikely that Metal Gear Solid 4 will be adapted for the Xbox 360 system.
Metal Gear Solid happened in 1998.
Metal Gear Solid 4: Guns of the Patriots
June 3rd 2011