This seems like another round of John "fucking" McAfee tweeting juicy stuff to get headlines. It's already working, just google "Bitcoin mcafee" or "Bitcoin satoshi" and you already see tons of entries, actually by just tipping "satoshi" you see some ranked McAfee related pages. This is excellent SEO results, because those keywords are very competitive, so now everyone that searches for satoshi will learn about McAfee. This is the game of internet content and McAfee is winning at it again. He gets notoriety, that's all that matters.
I still want to see what he has to offer. He has resources and knowledge, however at this point not even signed keys from the genesis block would prove anything to me, it would just prove that satoshi got his coins stolen by whoever signs. Satoshi is most likely dead at this point or held hostage by some institution somewhere, or perhaps by some hired hitmen. Bitcoin is a scary world so stay safe.