Okey, this should be a good news.
Geolocation
Geolocation is a JavaScript API that lets a web page query the browser’s location via JavaScript. It can be used to plot maps, give directions, attach location information to pictures, give a location for a weblog post and a pile of other things.
More details about Geolocation API Specification.
@font-face
Add support for the CSS @font-face property. This property allows you to specify a true type font file that includes a specific font you want to use to render a web page.
More details about @font-face
Video and Audio
Include support for the <video> and <audio>elements. This beta includes support for the OGG Theora and OGG Vorbis formats on all platforms