Those are both the cream of each crop. I'd love for games to use this but doubt they will as they're the uncompressed master sample from recording to your speakers. They take up the most amount of room audio wise on the disc. I don't know how they can top these formats in the future. If your receiver has these you have next gen and the gen after covered.
Now then in the settings can you decide how you want the audio to get to the receiver format wise? Or does the game/dev decide how it is encoded still? Do we have a picture of the back of a game.
OO so DTS still = 5.1 surround sound?