It wil come to europe, although ofcourse a modified version. Earlier specs of supersonic have confirmed a GSM version. Why it came to the US first, I don't know. Most of the time they first release a European version and then move on to the US. Perhaps HTC's brand-building in the US has been noticed and Sprint went ahead to discuss a deal for this phone. Non the less it could also be that the announcement coincided with an earlier event in the US, than one that is in the EU. I do remember how many rumors there where about a US release of the HD2 yes/no. Well, we all know now that did happen.
Samsung Galaxy SII : HTC HD2 : HTC Touch HD : Nokia N95 : Samsung D600 : Sony Ericsson T68i : Sony Z5 : Nokia 8210 : Nokia 3210 : Nokia 6110