Progress of MEME

Well, it's been quite a while since I posted anything so here are some interesting things.
With the arrival of the MGS4 trailer, various things have come up. Like Where is Snake? Who are the masked soldiers? What is the name of the new Metal Gear that has REX's top and RAY's legs. These new Metal Gear look exactly like what the descripton of a Metal Gear should be, a bipedal tank that has nuclear capabilities.
More questions arise once you've seen the site. Who is Raiden holding? His child? Olga's Child? and who is the naked guy with an eye patch? Could that be Big Boss since his Outer Heaven looks like it reached fruition.

Also, the AI in MGS2 were Memes, so will they make appearances or will this be an ongoing title like the Resident Evil games? I somehow don't think Hideo Kojima would want to end this series with all the interest into any game he produces and writes. But, will he wind up ending the series with a Matrix ending that doesn't necessarily mesh with everyone who sees it? Would he be so bold to do that? Would he kill Snake?