Macrovision has announced that their analog content protection (ACP) technology has been selected by the AACS LA to protect next-generation formats like Blu-ray and HD DVD. Here's part of their press release:
Macrovision Corporation (Nasdaq:MVSN - News) today announced that its analog content protection technology (ACP) has been included as a requirement in the specification for the content protection technology for next-generation optical media content such as Blu-ray and HD DVD by the Advanced Access Content System Licensing Administrator (AACS LA). This announcement expands Macrovision's leadership in content protection for entertainment content to next-generation, high-definition media formats.

With this agreement, Macrovision's ACP will be included in the latest AACS LA protection specification release, the Advanced Access Content System, which manages content stored on the next generation of prerecorded and recordable optical media for consumer use with PCs and CE devices. Using Macrovision's ACP solution, movie studios and consumer electronics companies will be able to protect content on next-generation optical discs from analog piracy and consumers will be able to enjoy the enhanced quality of these next-generation formats.
The movie studios are really trying to cover all their bases. With ACP, you won't even be able to make low quality, analog copies of HD titles. If you'd like to read more, Macrovision's entire press release can be found here.