Whos could he be? There is an interesting countdown going on the moment at a website. Is it a marketing stunt? Or would they unveil the real Satoshi? In my opinion, it is more like gaining some marketing popularity as their Twitter account has grown up quite massively.
As you said it's most likely a marketing strategy to pull more people to their website. The issue of the personality of Satoshi Nakomoto is really a mystery to be unravelled. I've decided to forget about knowing the real person, because everyone who is been presented to us as Satoshi is a mere guess.