Firefox 20.0 comes with a new Download Manager in the Firefox toolbar, so you can manage your downloading files without opening new window. The new Download Manager makes downloading files with Firefox even easier.
And also the Firefox makes some improvements for Android devices, now you can set shortcuts for your favorite or frequently visited sites. Firefox now supports additional Android devices, which is running on a ARM v6 Processor.
Firefox 20.0 for Windows, Mac, Linux
Firefox 20.0 for Android