As expected after the appearance of the steady version of Firefox 7, Mozilla has declared the launch of version 8.0 of Firefox into the beta channel of web browser. This is accessible for Mac OS X, Windows, and Linux; Firefox 8 Beta is based on the Gecko 8 engine. According to the wiki release, this is planned to appear in a stable, production which will be ready form on 8 November.

Control add-ons have been improved, when Firefox starts and detects that a new intermediary add-on has been installed and the add-on will be immobilize until accepted by the consumer. Also, when users updated with the Firefox 8 which is to be presented with a dialog box to pass once which is previously installed in add-ins.

Twitter has been added as a default search option only new languages like ​​English, Slovenian and Portuguese currently which support more which will "be added in future releases." By the "Restore tab in the application", users can now decide to load the contents of the tabs only when they are elected. Animation tab to reorder the tabs or separating them from a current window has also been superior. Other changes include updates WebSockets, cross origin resource shareing (CORS) for WebGL texture, and support for HTML5 elements of the media and right click menu.

Firefox Beta for Android application has also been efficient to include the search for Twitter, and now has the ability to add any other site markers for Android's home screen. The password security has been improved by implementing support for the master password.