The W3C released the latest HTML 5 working draft on January 22. The HTML 5 working group includes AOL, Apple, Google, IBM, Microsoft, Mozilla, Nokia, Opera and hundreds of other developers. Some new features in HTML 5: functions for embedding audio, video, and images, client-side data storage, and interactive documents. Other features include many new page elements.
HTML 5 improves interoperability and reduces development costs by establishing precise rules for how to handle all HTML elements and how to recover from errors.