More than 7 years ago, I wrote that XHTML2 was a major strategic mistake that had to be stopped immediately. In fact, I started saying so even earlier than that. Today, XHTML2 is no more. It takes with it into the grave CURIE, HLink and XFrames. Specs that nobody ever seriously considered as part of the future of the web, nobody outside of the XHTML2 WG of course.
Anyway. It's a good move but a move that comes too late. That decision should have been taken YEARS AGO. What a waste of time, money and energy. What a bad sign to the community. Many people thought the following : "it's good these specs are in the xhtml2 wg, we don't want them elsewhere".