Ah, so I am assuming this Xbox Infinity is also known as Xbox 720 yes? Well if so, then I know very little about it other then its names. I've seen articles about the rumored "Xbox 720" but you never know if these rumors are true or not. I've sort of lost faith in rumors ever since the stupid rumors that Windows 8 would emulate Xbox 360 games.
I hope this Xbox 720 wont have the same errors the 360 had, like the "you can't touch the Xbox while its playing a game or it will drill a line in your disk and completely ruin it". I had this happen to me when my sister tried to examine the 360 while I was playing a game and it went down hill from there. The console drilled a perfect circular line through the game disk and ruined it completely, not even the trusted Gamestop disk skip fixer wouldn't fix it. That is a big one on my list. And the ability to transfer saved data from one account to another would be nice too, but I'm sure that would lead to another issue if possible...