An anonymous reader writes: Mozilla today officially launched Firefox 33 for Windows, Mac, Linux, and Android. Additions include OpenH264 support as well as the ability to send video content from webpages to a second screen. Firefox 33 for the desktop is available for download now on Firefox.com, and all existing users should be able to upgrade to it automatically. As always, the Android version is trickling out slowly on Google Play. Full changelogs are available here: desktop and Android."