Is it possible that in the world one of 2010 there go out the F50 of every country?
I am assuming you are asking if there will be Adidas F50 uppers for every country that is in the 2010 World Cup. I think its very likely, whether they will be F50.i's or something else, I'm not sure. They've done this for both WC2006 and Euro2008, so I don't see any reason for them to discontinue doing it.
Although I can see them doing it by specific Adidas 'mascot' countries such as Spain, Argentina, Germany, etc, and not for all of them. Or they might just make a special World Cup upper, Predator, and Adipure, like they do for the UCL Finals and the Predator Confederations Cup Edition.