Attendees of the Microsoft Professional Developer's Conference were treated to a preview of the new user interface functionality destined for Windows 7.

Aza Raskin has released a video detailing his vision for the user interface to be used with the mobile release of the popular Firefox web browser - and it's pretty darn snazzy.

Bill Gates demonstrated a wall-size multi-touch interface remarkably similar to Cubit at the 2008 Microsoft CEO Summit, based around infra-red lasers and a tracking camera.

A posting to a Mozilla newsgroup gives a suggestion of the direction the team is taking for the next major release of FireFox.