Microsoft has registered numerous variants of XboxFusion.com (XboxFusion.biz, XboxFusion.de, XboxFusion.co.uk, etc), all of which currently redirect to the official English Xbox website. While the majority of the URLs were actually registered back in February, it was only very recently that their existence was uncovered by the sleuths at Fusible
Obviously, registering multiple domains for something no one has ever heard of – remarkably close to unveiling a new console
– carries heavy implications, but let's not get too crazy here. "Xbox Fusion" is probably just a new flavor of Mountain Dew.