Microsoft and Toshiba sent out a press release today, announcing plans to form the Advanced Interactivity Consortium (AIC). This main goal of this new group is to promote and extend the interactive features in HD DVD to other services and platforms like DVD players, PCs, portable media players and game consoles.
Toshiba Corp. and Microsoft Corp. today announced plans to form the Advanced Interactivity Consortium (AIC), an open forum aimed at the promotion of superior interactivity for a wide range of next-generation consumer devices, digital content and distribution scenarios. The newly formed organization’s mission is to maximize consumer satisfaction worldwide by accelerating industrywide adoption of advanced interactivity and interoperability across a broad array of HD DVD products.

In addition to its crystal-clear picture quality and sound, HD DVD, the next generation of DVD, approved by the DVD Forum, is the first platform to include advanced interactivity as a basic feature in high-definition movies and players, substantially expanding the possibilities of high-definition home entertainment.
If you'd like to read more, the entire press release can be found here.