I would say late 2011 or 2012. No way are the next consoles coming in 2010. I'd say a PS3 slim or 360 slim, and a black Wii w/ DVD make it to the market in 2010.
TGS MGS4 Snake:
E3 07 MGS4 Snake:
looks pretty much the same to me, maybe different shade of lighting and small model adjustments (brown straps on the suit).
both should be pretty similar consider both will have M&KB support and mod support. PC most likely better graphically though, but that will probably cost more money.
http://www.threespeech.com/blog/wp-content/uploads/2007/01/PSEye_image002.jpg
Q&A
http://www.watch.impress.co.jp/game/docs/20070426/eoj01.jpg
Kinda ugly looking, but the features seem preety damn sweet.