Well they entirely confirmed a bunch of bad things.
http://news.xbox.com/2013/06/mainThe anti-used games thing is confirmed to be terrible. You CAN play the games you own on up to 10 Xbox Ones that you register your account on which is fine (though obviously only useable on one Xbox One at a time)... BUT EVERYTHING ELSE SUCKS.
You can't actually sell your games properly. The person you're selling it to needs to be on your friend list for at least 30 days, and then you have to transfer the license for the game to them... and that's the last time it can be transferred ever (so he can't sell it again, it won't work). Some games might be completely disabled from being sold used at all too, the publisher chooses that. Otherwise, you can sell your game to a retailer. A SPECIFIC retailer that is allowed to sell Xbox One games, not just any random mom and pop store.
The "sort of always online" is true. Basically the system checks on you every 24 hours, and if somehow your internet is off when the check happens you're locked out of playing games until the next check, and if you play one of your games on another person's Xbox One it checks on you once every hour.... because?
Obviously this means that, if you're part of the ~25% of Americans (more of Canadians, not sure for Europeans) that don't have any internet, you can't play games on the Xbox One, at all.
And the Kinect is mandatory (if it's not hooked up, the Xbox One doesn't function), but you can turn it off/pause it. Microsoft say that, in that case, the microphone only waits for the "Xbox On" voice command... but that still means the microphone is open and might be listening to you all the time. Hard to say until the thing comes out and people verify what data goes out during the daily check.
I don't think any company has ever gone into E3 in such a bad state so far. Even Sony's PSN hacking issue wasn't THIS bad. No wonder Microsoft is paying off publishers to not show PS4 versions of multiplat games at E3 (another rumor from insiders on NeoGaf... but at this point I'm willing to believe it), they want to get as much press as they can in hopes of making people forget about the crap.
Sony better not screw up that much, otherwise I'll be very sad.