I've put up a page with some information about my new book, H.264 Advanced Video Compression:
http://www.vcodex.com/h264book/
Apart from chapters 2 and 3 (video quality and video compression concepts), the material has been completely rewritten. Chapters 4-7 cover the H.264 standard in detail and chapters 8-10 cover performance, implementation and extensions. Please get in touch if you have any questions about the book.
- Iain.