Fans of Mozilla Firefox on Android will be happy to hear that Mozilla is planning to unveil a major upgrade to the mobile browser in several days. Based on the teaser image above, we believe Mozilla will enhance the Firefox browser in a way that makes it operate more efficiently and securely. The original post came by the way of Mozilla’s Firefox Twitter account, but we imagine Mozilla will issue a press release detailing the major changes found in the browser. With Chrome, Dolphin, Opera, and the stock ICS browser, Android users have a lot of options when it comes to choosing a mobile browser. Hopefully, Mozilla can enhance the user experience of the Firefox for Android browser with the new upgrade. Stay tuned for more information regarding the upgrade when it becomes available.