I do find it a little interesting that Phil Spencer is ignoring the content of the leaks and instead just focusing on the fact the documents are out of date. I would imagine the contents of the leaks are likely still pretty close to accurate, even if plans have changed a little, as a result.
I also wonder if Xbox will use the reaction to the leaks to determine potential changes going forward (ie: reactions to the console being all digital, reactions to the next gen console processor, etc).