Where did you get those release date estimates? As fas as I'm concerned Fallout hasn't even been announced and MGSV has never even had a launch window. Personally I wouldn't expect either one until mid to late 2015.
There is no bigger Fallout fan than me, Fallout 3 is my favourite game of all time. I lost count on how many times I finished Fallout 3 and New Vegas. Please Bethesda, all I ask of you is to release another Fallout game. Even if the price point for the game is $300, I'd pay it.
At least announce the new Fallout game, even if it takes years before it comes out. I want to know there is one in development right now, please Bethesda do the right thing by your fans.