In an effort to slow the already glacial pace of the iOS-friendly HTML5 standard, the WC3 is telling developers to hold off on deploying the technology in their web sites due to lack of interoperability in certain areas.
"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).
For example, Apple's Safari supports only H.264, Firefox only OGG Theora and Google's V8, and Google supports everything. (Internet Explorer 9, currently in beta, will bring its own unique set of support as well).
Typically the way things have moved at all in the browser space is innovation and implementation by each individual bowser maker, then standards have followed as web developers have built sites and usage has demanded it.
Apple, Google, probably Microsoft won't slow down with HTML5, so no worries there, but it's possible they'll have to drag the WC3 forward with them, kicking and screaming as they do.
iPhone, iPad, and other mobile devices won't be waiting for them.
[Infoworld, Thanks Antony for sending this in]