January 22nd 2008: W3C published a working draft for HTML 5. The HTML 5 working group includes AOL, Apple, Google, IBM, Microsoft, Mozilla, Nokia, Opera and many hundred other vendors.

Some of the new features in HTML 5 are functions for embedding audio, video and graphics, client-side data storage, and interactive documents. Other features are new page elements like <header>, <section>, <footer>, and <figure>.

HTML 5 improves interoperability and reduce development costs by making precise rules on how to handle all HTML elements, and how to recover from errors.

See full HTML 5 Reference