14 DAY TRIAL // The ninth beta release in the new Firefox 25.x branch has been made available for download by Mozilla for all available platforms, including Linux.
If the previous versions of Firefox are any indication, it means we are getting closer to a new stable version, in this case the 25.x branch. There is no official word on what this build brings, but you can be sure it's about security fixes.
The binaries for Mozilla Firefox 25 Beta 9 can be downloaded and run without having to install anything. This is true for all the supported platforms.
You can also check the proposed features for this latest development branch.
Download Mozilla Firefox 25 Beta 9 for Windows Download Mozilla Firefox 25 Beta 9 for Linux Download Mozilla Firefox 25 Beta 9 for Mac OS X
Remember that this is a development version and it should NOT be installed on production machines. It is intended for testing purposes only.