If you read the latest news, it would seem that HTML5 is most notable for killing off XHTML2 (to accompanying sturm und drang) and backing off on codec specifications for use with the new <video> tag. Practically, since HTML5 is now the de facto road map forward for web developers, it may be of more interest to folks to browse the HTML5 spec or scan ALA’s HTML5 preview article from a few months back. There are some nice things in there.

It’s also worth mentioning: Video for Everybody!,  a nice two-codec solution to implementing the <video> tag.