Blu Ray and HD DVD are irrelevant
Shiny discs that nobody will use. DVD is the last major physical format.
From Tom's Hardware Guide: Tom's Hard News.:
QUOTE
Redmond (WA) - In an exclusive interview with Tom's Hardware Guide, one of Microsoft's lead representatives on the DVD Forum Steering Committee said that decisions regarding whether his company and Intel would back and promote HD DVD as a high-definition video disc standard, were determined only within the last few days. Prior to some critical recent developments and announcements, both companies - which had proclaimed neutrality - may have been ready to back Blu-ray.
UNQUOTE