DVD is increasingly showing a strain in providing HD content.

[GameAnalyser]

HappySqurriel said:

Being that we’re (almost) 5 years into the generation, and DVD has been more than adequate for the vast majority of games, I think this mostly validates Microsoft’s choice of DVD as a media format; and indicates that a larger format (most likely a Blu-Ray based format) will be necessary for the next generation.

Well does this give a hint on M$ including Blue-Ray for their next console? Yeah DVD has been doing the work until 360 version of FFXIII highlighted some issues related to the HD content downgrade.