HTML5 has reached Last Call status – submit feedback until August 3
In practice this means that anyone is welcome to submit their feedback on the HTML5 specification and a number of related specifications. That’s kind of always been the case since participation in the HTML Working Group is open for all. But now the spec is stable enough for people who don’t actively participate in the standards process to review and comment.
It’s not just the actual HTML5 specification that has reached Last Call. The others are HTML5: Techniques for providing useful text alternatives, Polyglot Markup: HTML-Compatible XHTML Documents, HTML Canvas 2D Context, HTML Microdata, and HTML+RDFa 1.1.
If you have the time, read through the documents that are of interest to you and submit your feedback. If you have opinions on things that aren’t typos or obvious editorial mistakes, make sure to back them up with solid technical arguments to increase the likelihood of them being considered.