Ian Hickson introduces the end to version numbers for the HTML specification. "The WHATWG HTML spec can now be considered a "living standard". It's more mature than any version of the HTML specification to date, so it made no sense for us to keep referring to it as merely a draft. We will no longer be following the "snapshot" model of spec development, with the occasional "call for comments", "call for implementations", and so forth." (Thanks to Paul Wise)
In 2009 we announced that the HTML5 specification at the WHATWG was progressing to Last Call. The plan at the time was to finish the specification this year and publish a snapshot of "HTML5" in 2012. However, shortly after that we realised that the demand for new features in HTML remained high, and so we would have to continue maintaining HTML and adding features to it before we could call "HTML5" complete, and as a result we moved to a new development model, where the technology is not versioned and instead we just have a living document that defines the technology as it evolves.
As there is still interest in publishing a snapshot of HTML5, the W3C is still working on that (in conjunction with the WHATWG).
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