Xbox One GPU speed has been increased since E3, says Microsoft

Not a huge jump, but it's nice to see they are still doing everything they can to get every little bit out of it they can.  Tweaking and optimizing up until the last second can do nothing but benefit the system.  

Xbox One GPU speed increased since E3, says Microsoft

"This is the time where we've gone from the theory of how the hardware works--what do we think the yield is going to look like, what is the thermal envelope, how do things come together--to really having them in our hands. That's the time where you start tweaking the knobs. Either your theory was right dead on, or you were a little too conservative, or you were a little too aggressive. It's actually been really good news for us, and an example of that is we've tweaked up the clock speed on our GPU from 800mhz to 853mhz."

Very nice. I doubt we'll notice anything from that until very late in to this consoles lifespan.