October 14th saw the release of Firefox 3.1 beta. With this release Mozilla wants to showcase improvements in the user interface and greater support for emerging web standards. This release was originally intented to come out in August but they released an additional Alpha before this release.
Another new feature is the implementation of some Geolocation Specifications that allow users to pass location information to applications on their machine, a new thumbnailed tab browsing interface, addition of the HTML 5 video element so that the browser can handle playable content natively and also a private browsing mode akin to the one in Chrome.
I will be trying these out today. Onto the download site!