Quoted from John_I:You do bring up a good point that I should have mentioned, but didn't because it is obvious: K is nothing but a tool in this situation. The people who leak to him are the ones who are violating a trust because they know he is going to turn around and tell the world. They are simply using him because they know he has no integrity and as you point out, he is not under an NDA. The people who talk into K's ear are the true assholes in this situation (unless of course they are lying to make him look like a fool).
Could easily be Stern behind the anonymous communication leaking news to K knowing he will leak it for the attention without fail. Free publicity and market hype, last few titles took a while to leak but Rush is going to be divisive if you ain’t a Rush fan then you want to know what’s next and Stern must know that, they are number1 in this game for a reason and people often don’t give them enough credit.