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The W3C also remade HTML as XHTML, releasing version 1.0 (based on HTML 4.01) in 2000 and XHTML 1.1 (based on XHTML 1.0 Strict) in 2001, and proceeded to work on XHTML 2.0 (based on what the experts thought the web should use). XHTML 2.0 was never really adopted. To begin with, it had very little to do with classic HTML and was not backwards-compatible, which meant that it was simply another language that browsers had to support—even though it technically did the same thing as HTML. Developers thought that the W3C had lost touch with developers and the Web Hypertext Application Technology Working Group was created outside of the W3C to start updating the venerable language again in 2004. As of this writing, HTML5 remains a work in progress.