First look: Firefox 3.1 beta 2, now with private browsing
 

Mozilla has announced the official release of the second Firefox 3.1 beta. This version introduces the new private browsing mode feature and several other noteworthy changes.

The 3.1 roadmap began to coalesce after the release of 3.0 earlier this year. Firefox 3.1, which is codenamed Shiretoko, will include many improvements and several important features that were originally planned for the 3.0 release but were deferred for various reasons. Mozilla released the first 3.1 alpha in July with some new CSS features, AwesomeBar completion enhancements, and a new user interface for switching between tabs. The second alpha, which arrived in September, introduced support for the HTML 5 video element.

The most significant addition in beta 2 is the new private browsing mode, which will not store any of the user's session information while it is enabled. The feature is similar to the Incognito mode that is offered in Google's Chrome browser and Safari's Private Browsing. The feature was first requested for Firefox back in 2004, but extensive reengineering was required to make the feature work.

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