The full list is available here.
Had Microsoft made the XBox One backward compatible since day one, I am pretty sure there would be a lot more Xbox Ones’ in people’s homes than there currently are. Will the new backward compatibility help with Xbox One sales? Only time will tell, but I think it will.
For Backward compatibility to work on your Xbox One you will need the new Xbox One experience Update. I have been in the beta for some time now and I have to say its a huge improvement over the original UI. Check out the video below.