HTML5 is available in W3C’s Cheatsheet!July 20, 2010
This is another reason why you can use HTML5 today!
Dominique Hazaël-Massieux (W3C) has managed to integrate the various new elements and attributes of the HTML5 specification in the latest release of the cheatsheet. As a reminder, the cheatsheet is a mobile-friendly Web application that provides a compilation of useful knowledge extracted from W3C specifications (both available in the Web version and in the Android application.)
Please contribute to the work! Feedback, comments and suggestions are very much appreciated!