It may not be the world’s fastest web browser but Mozilla Firefox is certainly getting better and better after its each new release. The current stable (means official release) version is 8.0 and Mozilla developers have already released the beta versions of the upcoming 9.0 version as usual.
Unlike in the past where it took a certain amount of time between each release cycle nowadays just like with Google Chrome and Chromium, Firefox too issues new versions quite quickly so most of the time there are no big changes. This seems to be the case with the 9.0 version too but it does bring few new changes such as:
*. Improved java script performance.
*. Concerning Mac OSX Lion users, this version of Firefox web browser should integrate quite well with the OS look-n-feel and better Swipe support.
*. Concerning web developers, added support for “font-stretch” as a CSS function (obviously).
*. Improved support for HTML5, CSS and MathML.
*. Few GCC (GNU Compiler collection) related fixes.
*. Although I’m not sure whether this is because of Ubuntu developers but this version of Firefox seems to come with new icons (with 3D looking ones) for “refresh/stop” for web page related functions.
These are some of the new changes according to this official beta release notes page to mention. As usual, you can install Firefox 9.0 (beta) in Ubuntu 11.10 Oneiric Ocelot, 11.04, 10.10 and 10.04 by simply using the below commands in your Terminal window.
sudo add-apt-repository ppa:mozillateam/firefox-next
sudo apt-get update
sudo apt-get install firefox
However if you prefer to perform a clean installation, then first backup your current personal data (bookmarks etc) in Firefox and then use the below command before the above one to completely remove the currently installed version in Ubuntu.
sudo apt-get purge firefox
And then use the first command afterward to install the latest beta (3 as the time of writing this post).
But remember, it’s still at its beta stage thus these versions are aimed at beta testers and somewhat “advanced/experienced” users. So if you’re concerned about your Internet security then I humble advice you to stick with the current stable version of the Firefox.