There are rumors all over the internet about the 720 and what Microsoft might be planning to do. The biggest one being an always online DRM for the console. But there is also the rumor that you will NOT be able to share any games. Supposedly, the discs will be used once and only once to put the info on the hard drive. You also will not be able to let friends borrow your games. This along with some of the rumors regarding the apps that must be bought through Microsoft are all incredibly troubling. Apparently, they want to connect the 720 with Windows 8's metro userface.
Of course, these are all rumors and may be completely false. But sites across the net are posting about them and some of these things could very well be true. If these rumors are true it will certainly hurt the 720 and bring more people to the Wii U and PS4 respectively.