The W3C HTML Working Group has posted the first public working draft of their version of HTML 5. I haven't had time to do a side-by-side compare, but at first glance this seems to be essentially the same as the current work in the WhatWG. Perhaps there's a little less focus on parsing models. There's also a nice summary of the differences from HTML 4. I noticed for the first time that the acronym
element (which I actually use on this site) has been removed.