Punished_Snake: Yeah, I think that mission will be the "rescue Chico" mission, only with skins of MGS1 Snake and the Darpa Chief.
But hey, if this is free, it's not a problem (otherwise if Sony will charge us for it, is a shame).
ElPrimordial: I wonder how long this prologue will last? I hope at least 10 hours if its gonna cost $30. What do you think? Looks very tasty, but at times irreal, since, in last video, you can see cameras along the way, but seems to be nobody its able to use them 'cos our dear Snake can't be seen it. I think they should put him in disguise to be more credible... sorry, if I too demanding, but since that seems to be the current goal of Kojima, I mean "realism", they must take care attention to all those details and not only visual enhancement.
Sadly I thing this prologue will be very short.
If you think about it, Metal Gear Solid 4 can be completed in less then 3 hours if you know the way (all the additional play time comes from cutscenes).
Other MGS games are very short too, around three hours of actual gameplay each.
So I think, If we are LUCKY, that this prologue will be around 1 hour and thirty, with a lot of cutscenes to retcon the game with Peace Walker. Basically I think there will be one or two "main" missions, and a lot of "side" one, settled on the same place, where you must rescue people or recover items.
I hope to be wrong about this, but actually I think I'm right :(
The fact that the game will be sold for around 30€ confirm this.