This is the twelfth development milestone and the first beta release of the mobile version of Firefox, for testing purposes only, intended to:

get wider feedback on our approach to the user experience

engage Mozilla community teams, including localizers, and testers

get feedback from Web developers

encourage add-on developers to port existing add-ons and invent new ones for mobile

The initial focus of Fennec development was on building a new user experience that reflects Firefox's design principles, adding touch screen support and other interactions appropriate for mobile phones and other handheld devices, while preserving leading features like the Smart URL Bar ("awesome bar") and support for add-ons.

For beta 1, we continued to focus on performance and responsiveness. TraceMonkey, Mozilla's new JavaScript engine, is now included in Fennec, greatly improving performance. Many other performance improvements were made to panning, zooming, responsiveness and application start-up, some of which are listed below.

To help out, visit the Mozilla mobile page to learn about our public weekly meetings, how to find our community on IRC, and more.

These Release Notes provide a "quick start" for the impatient, some highlights of what's included in this version, download and installation instructions, known issues, and frequently asked questions. Please read these notes and the bug filing instructions before reporting bugs to Bugzilla.