I don't know if it's fake or not. But it would make sense for Nokia to do this from an manufacturing standpoint. Just like HTC will release the same hardware for two OSs. Two for one is always good.
Nokia N9 is the latest device out with a Meego Harmattan system. The N9 device itself is purported to be the template for several new upcoming Windows Phones.
Er....if you are able to ignore all the horror and drama on the below threads, then you can get a pretty good idea of how Nokia is preparing itself for next year.