This is the story I read. Dell seems to backing the Blue-Ray though.

Quote:

Several industry sources last week told EE Times that Microsoft is muscling into the optical-disk fray by leveraging its operating-system clout to bundle HD-DVD within Vista, the company's next-generation OS. There is also talk that the software giant may be planning to offer cash incentives — in the form "coupons" — to system vendors or retailers if they agree to support HD-DVD. Such coupons would provide "credits" or "memos" for each PC that is sold with HD-DVD inside.




Link