According to The Hollywood Reporter, while it would appear that Microsoft has made a full commitment to Toshiba's HD DVD format, especially now that plans have been announced for an external HD DVD drive for Xbox 360, the company is leaving open the possibility that its next-gen console could one day support the Blu-ray format if that becomes necessary.

Microsoft corporate vp of Interactive Entertainment Business Peter Moore spoke with Japanese Web site ITmedia at last week's CES, telling them that if Sony's Blu-ray looks as if it's going to win the format war that Microsoft could introduce a Blu-ray add-on similar to the HD DVD external drive currently in the works.