I notice there are specs for HTML5 dated today at: http://www.whatwg.org/specs/web-apps/current-work/ http://www.w3.org/html/wg/html5/
diff -u shows a lot of difference, but most are cosmetic. (I gather they're there because Hixie disagrees with some W3C pubrules but can't get them changed.) Is there any page that lists the substantive differences? Presumably the generation of the drafts is automated; is the source file for the drafts published?
