Saw this article at ultimate AV Mag website
http://www.ultimateavmag.com/news/no_more_analog_high_def_from_blu-ray/Part of the topic
February 17, 2010 — CE Pro reported yesterday that Blu-ray players made after December 31, 2010, will be required to downconvert high-def content to 480i or 576i for their component-video outputs. Who has the authority to require this? The AACS Licensing Administrator, that's who. This industry-wide organization develops and maintains the Advanced Access Content System, a critical element in the effort to combat piracy by managing how content can be viewed and copied.
Click on the link for the rest of the topic.