The W3C announced yesterday that a new Working Group was created for working on the HTML language.
I don't know if you think the same way than me about this, but for me, HTML language is such a pain in the ass for security. It allows too much things, modifications, ill-written html... With XHTML we have the opportunity to have a quite strict language which is definitely better...

Please guys, when you are doing the new HTML think with security in mind, thanks.