W3C is pleased to invite implementations of the HTML5 specification, which reached the Candidate Recommendation status on 31 July 2014. This Candidate Recommendation is expected to end no sooner than 28 August 2014.
A preliminary implementation report is available, but it is expected to evolve significantly between now and Recommendation (aka, Web standard).
This specification is limited to providing a semantic-level markup language and associated semantic-level scripting APIs for authoring accessible pages on the Web ranging from static documents to dynamic applications.