Despite the hype, the HTML5 specification isn't yet ready due to interoperability issues, a W3C official says
more...HTML5, which updates the HTML specification to accommodate modern Web applications, has gained a lot of adherents in vendors like Microsoft, Google, and Apple. But the specification is plain not ready yet for deployment to websites, an official with the World Wide Web Consortium (W3C), which oversees HTML5, stressed this week.
"The problem we're facing right now is there is already a lot of excitement for HTML5, but it's a little too early to deploy it because we're running into interoperability issues," including differences between video on devices, said the official, Philippe Le Hegaret, W3C interaction domain leader. He is responsible for specifications like HTML and SVG (Scalable Vector Graphics).