Mozilla has officially announced that the first beta release in the Firefox 20.x branch is now available for download.
The new Firefox 20.0 Beta 1 for Linux comes with some interesting features and new updates.Highlights of Mozilla Firefox 20.0 Beta 1:
• Per-window Private Browsing has been implemented;
• A new download experience has been integrated;
• A ability to close hanging plugins, without the browser hanging, has been added;
• Firefox will offer to reset the Awesomebar search provider, if it has been changed by third-party software or through about:config;
• Continued performance improvements around common browser tasks (page loads, downloads, shutdown, etc.) have been done;
• The Unity plugin is now displayed in HiDPI mode.
A detailed list of changes can be found in the announcement
.Download Firefox 20.0 Beta 1
right now from Softpedia. Remember that this is a beta version and it should NOT be installed on production machines. It is intended for testing purposes only.