At Google I/O event last year HTML 5 capabilities were demonstrated to developers for the first time. This year at the Google I/O some important announcements have been made which will make HTML 5 development easier across different browsers.  

On day 1 of the I/O Google has made many announcements like release of open source, royalty-free video format WebM, Chrome Web store, opened up Google Wave, released open source Font API and directory etc.