Upgrade to Firefox 40 in Ubuntu 15.04, 14.04 – UbuntuHandbook
Mozilla Firefox 40 offers Windows 10 support, new Android navigation gestures, more malware protection
Firefox 40 features a Windows 10 optimized theme - gHacks Tech News
How To Install The Latest Firefox (Non-ESR) On Debian 10 Buster (Stable) Or Bullseye (Testing) - Linux Uprising Blog
Firefox tries to edge out Microsoft in Windows 10 browser battle - CNET
Mozilla Firefox 40 Released with Windows 10 Improvements
Mozilla Firefox 40.0.1 Exclusively Released for Windows Users
Firefox 40 Begins Warning Users About Unsigned Add-Ons | Threatpost
Firefox 40 provides a 'fresh new look' for Windows 10 - Software - News - HEXUS.net
How to Use Mozilla Firefox: 15 Steps (with Pictures) - wikiHow Tech
Firefox 20 official with a seamless download manager, private windows (video) | Engadget
Firefox 40 Arrives in All Supported Ubuntu OSes in Record Time
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Mozilla releases Firefox 40.0.2 update to fix issues in the browser - gHacks Tech News