I attended Google's "Next Generation Open Video" summit back in July. They've now posted links to the presentations from that.
• NGOV Product Requirements (M. Frost / J. Luther, 68kB PDF)
• WebM Product Updates•WebM Update (J. Bankoski, HTML5-format)
• WebM Adoption (J. Luther, 137kB PDF)
• NGOV Project Update (P. Wilkins, 1.2MB PDF)•Comparative Visualizations (P. Wilkins, HTML5-format)
• WebM Contribution Process (J. Koleszar, 1.2MB 1.2MB PDF)
• NGOV in Hardware (A. Kuusela, 180kB PDF)
• Further Video Use Cases (H. Finnan, 601kB PDF)
• WebP Still Image (P. Massimino, 697kB PDF)
The two HTML5 links aren't working correctly for me.
There's plenty of interesting ideas in there. I do think that they need to clearly define Levels, which wasn't then on their roadmap.