Firefox  3.6 Beta 1
* Users can now change their browserâ€™s appearance with a single click, with built in support for Personas.
* Firefox 3.6 will alert users about out of date plugins to keep them safe.
* Open, native video can now be displayed full screen, and supports poster frames.
* Support for the WOFF font format.
* Support for new CSS, DOM and HTML5 web technologies.