Today we got to see the first public working draft of HTML 5 here.
The most interesting for me were the differences between HTML 4 and HTML 5 and the improvements.
HTML 5 adds support for 2D drawing by using the new canvas element. There are also audio and video elements, new data presentational elements, new types for user inputs (like browser based calendars) etc.
Although this is still a draft it looks promising. Check it out 
