Mozilla Firefox has released its fourth beta release of its Firefox 3.5 for its next version of the Firefox web browser. As usual, the latest Firefox 3.5 Beta 4 is a public preview version which is intended for developers’ testing, evaluation and feedback. According to Mozilla, the latest Beta 4 is based on the Gecko 1.9.1 rendering platform. With this new technology, Mozilla promises the new Firefox 3.5 Beta 4 is more stable while the performance, speed and compatibility has also improved tremendously.

There are a few new features are added to this new release:

  • Six more languages added in this release, bringing the total languages to 70
  • Added Private Browsing Mode to control private data,
  • Better performance and stability with the new TraceMonkey JavaScript engine
  • The ability to provide Location Aware Browsing using web standards for geolocation
  • Support for native JSON, and web worker threads
  • Improvements to the Gecko layout engine, including speculative parsing for faster content rendering
  • Support for new web technologies such as: HTML5

The new Firefox 3.5 Beta 4 supports Windows, Mac OS X and Linux. Users who want to have the first experience on Firefox’s next generation browser can download the Beta 4 via the link here.

Update: Firefox 3.5 Preview for Developer