Seeing as we are also getting into some of the more technical aspects of the system, there is quite a bit of noise about how Microsoft is having significant yield problems with the Xbone.
It started quite a bit before E3 even started but here is a good discussion on it:
http://www.neogaf.com/forum/showthread.php?t=576869
http://www.giantbomb.com/profile/elo...rumors/101270/
Sounds like they might be even downclocking the GPU. These Xbone problems could explain the chatter about retailers getting more than 2 to 1 allocations of PS4 to Xbone for pre-orders. Certainly nothing confirmed but interesting stuff.