Apart from everything else that makes people choose a console to play on.
That argument is made all the time, will also be made for xsx once next gen graphics cards are out.
Lockhart is a console, whether it gets released or not is another matter. I suspect it will personally.
It's in the profile for dev kit, and littered around the same places as Anaconda where you would expect it to be.
I've not seen any of those rumors.
If there's an up clock i expect it to be well under 1Ghz, more like 500Mhz. At that resolution that equates to a reasonable bump in performance.