So it was reported last week on the WWE website that Brock Lesnar "has decided to withdraw from any involvement with the company". That prompted much discussion among the IWC, with pretty much unanimous agreement that the whole thing is a work.
I tend to agree. If you visit the WWE's news page on the story today, you'll see there's no mention any more of Lesnar turning down their contract offer, and no mention of Brock at all on the main news page.
What that says to me is that he's already put ink to paper, and he'll make a 'surprise' return sometime soon. The fan boy in me would like it to be at SummerSlam, but I don't credit WWE Creative with that much imagination.