The Xbox Backwards Compatibility for the Xbox One will drop later this year - but it will NOT be as extensive as Xbox 360 backwards compatibility lineup. You see, according to Microsoft the "enhanced" tag won't mean the same thing for each game.
Xbox One X won't be out until November this year. This is true as the Xbox One X does feature a customized AMD graphics capable of 6 teraflops of performance alongside 12GB of GDDR5 RAM. The PS4, PS4 Slim, and PS4 Pro would seem to match up nicely with the Xbox One, Xbox One S, and Xbox One X. Microsoft apparently doesn't feel that way at all, and in a recent interview, Xbox head Phil Spencer made it clear that be believes the Xbox One X has no competitor at all. It seems clear that Microsoft isn't anxious about that price gap between the two consoles since the company doesn't see them as direct competitors. "I'll tell you, I've never heard a developer say publicly or privately that somehow they're held back".
Spencer gave two reasons for the smaller library of compatible original Xbox games on the Xbox One.
Microsoft showed off dozens of games at E3, ranging from the super-slick racing simulator Forza Motorsport 7 to the rollicking, social pirate game Sea of Thieves to Anthem, an astonishing-looking sci-fi action game developed by BioWare in Edmonton, creators of the award-winning Mass Effect franchise.
"I've said I want to bring Game Pass to the PC". The game rights which have to be secured is a huge problem as a lot of studios may or may not be available right now.
In Spencer's words: "You should think about the hardware part of the console as not the money-making part of the business". "People want to know what the roadmap in the future looks like, and that's my job to deliver it to them".