Finally, Microsoft did something right with their Xbox One. Xbox big boss, Phil Spencer revealed at E3 that they are working on the backward compatibility of Xbox One with the Xbox 360 games. Xbox 360 titles will show up automatically and games will be able to take advantage of broadcasting, screenshots and game DVR features. Microsoft added that they promise that Xbox One owners will be able to play multiplayer with Xbox 360 games with their friends owning the much older Xbox 360.
The backward compatibiliy will let Xbox One users to play their favourite game from its predecessor, without paying for anything. The list of games which are already approved for backward compatibility are on this link.
XBox One FAQs have not been changed.