As you might have already read somewhere else, the W3C published the first working draft of the specs of the next version of HTML, version 5.
The specs are quite long and I'm starting to have a glance at them, so for the moment I'll just publish some links while I'll write the first impressions as I finish reading them.
Some of the most interesting new features for authors are APIs for drawing two-dimensional graphics, embedding and controlling audio and video content, maintaining persistent client-side data storage, and for enabling users to edit documents and parts of documents interactively. Other features make it easier to represent familiar page elements, including <section> <footer>; <nav> (for navigation), and <figure> (for assigning a caption to a photo or other embedded content). Authors write HTML 5 using either a "classic" HTML syntax or an XML syntax, according to application demands.
The HTML 5 specification helps to improve interoperability and reduce software costs by giving precise rules not only about how to handle all correct HTML documents but also how to recover from errors.
Technorati Tag: HTML 5