Hello Linux Geeksters. Not long after the release of Firefox 36, the first beta version of Firefox 37 has been made available for download, the final version of the browser being scheduled for release for the 7th of April, 2015.

If you don’t already know, the Firefox browser is built on four branches: Nightly, Aurora, Beta and Stable. With the release of Firefox 36, Firefox 37 has been moved to the Beta branch, Aura branch received Firefox 38, while Firefox 39 is now in the Nightly channel.
While it is still in its early development stages, Firefox 37 Beta 1 comes with a fix for a issue related to the “Sync Now” button and a few other bug-fixes have been added.
To install and test Firefox 37 Beta 1 on Ubuntu 15.04 Vivid Vervet, Ubuntu 14.10 Utopic Unicorn, Ubuntu 14.04 Trusty Tahr, Ubuntu 12.04 Precise Pangolin, Linux Mint 17.1 Rebecca, Linux Mint 17 Qiana, Linux Mint 13 Maya, Pinguy OS 14.04, Elementary OS 0.3 Freya, Elementary OS 0.2 Luna, Deepin 2014, Peppermint Five, LXLE 14.04, Linux Lite 2 and other Ubuntu derivative systems, you have to add the ppa to your system, update the local repository index and install the firefox package. Like this:
$ sudo add-apt-repository ppa:ricotz/mozilla
$ sudo apt-get update
$ sudo apt-get install firefox
Optional, to remove firefox, do:
$ sudo apt-get install ppa-purge
$ sudo ppa-purge ppa:ricotz/mozilla