So what happened to XHTML5?

http://www.w3.org/TR/html5/

That page is a draft for both xhtml5 and html5?
So there's no difference between these doctypes?

In 2012 at the moment of writing, it was clear that W3C decided to abandon XHTML for HTML 5. This decision was motivated by several reasons:


Only few people were really interested in XHTML. Most of the websites were written in plain HTML.
Even fewer really understood what XHTML is about and how to use it. Too many websites which pretended to serve XHTML used wrong headers, instead of Content-Type: application/xhtml+xml.
Even when you fully understand what XHTML is and what must be the headers, the thing is really tricky with some crappy browsers not accepting/supporting application/xhtml+xml content type. This meant that you had to change the header according to the browser.
The XML part of XHTML also caused some weird situations the developers had to solve. One is INVALID_STATE_ERR: DOM Exception 11 message appearing when you assign the text containing HTML characters (like &eacute;) to an element within the XHTML page. When you encounter this error with its very helpful message in a large web application after doing an AJAX request, you have really no idea if it's the fault of JQuery, AJAX, or something else.
Writing HTML 5 code doesn't mean mixing up tags all around. If you're passionate about XML and XHTML, you can still write HTML 5 code which will look very close to XML.
In the early days of mobile phones, XHTML was interesting for the mobile devices which were not very powerful. Parsing XML is much easier than HTML. Now, with dual-core mobile devices, it really doesn't matter if they have to parse clean valid XML or dirty HTML full of hacks and mixed tags.


The spec of October 2014 mentions XHTML syntax. For the moment, it is unclear whether there is such a thing as the new XHTML language (not syntax), and if there is, what will be the position of XHTML, nor the adoption of the new XHTML standard by the mainstream browsers.
