Fennec is the code name of the effort to build a mobile version of Firefox. Fennec is part of the Mozilla effort to enable all mobile phones with a Mozilla application.
The overall goals for Mobile Firefox are:
· provide Mozilla’s standards-based open-source browser engine, optimized for mobile, that can be embedded by device manufacturers and others;
· a full-featured mobile browser including support for XUL-based add-ons, delivering on Firefox’s key principles of ease-of-use, security and accessibility;
· grow the Mozilla community in the mobile space;
· provide tools and documentation to help developers develop, debug and deploy web applications;
· do all of this work in the shared Mozilla source repositories so all platforms, desktop and mobile, benefit each other

UI modes:
· full screen
· portrait/landscape
· mouse pointer for non-touch screen devices
zoom:
· zoom to relevant section
· zoom to width
· zoom to height
· zoom to fit page
scrolling/panning:
· kinetic
· normal (through keys)
· accelerated
· security (e.g. how does the user know the site is secure?)
· tabbed browsing
· spatial navigation - keyboard shortcuts
layout:
· ssr (single column display)
· fit to width
· fit to height
· scrollbar-free layout
· viewport meta tag
· breakpad for ARM
· virtual keyboard
· text input - password/input manager + native integration
· low memory handlers
· start page
· basic navigation/UI design
· localization
· text layout
· send page/URL
· device integration through Javascript
· determine build profile (simple, basic) and what needs to be removed/added
· radical new UI

What's New in This Release:
· Important bug fixes: places.sqlite-wal takes too much space for Fennec, password fields not masked, typing in text fields started clearing beginning of characters, input issues in rich text editors, crash fixes
· Fixed localization issues with truncated strings in French, Russian, and in Italian
· Improved page load speed, especially on 3G networks
· Improved panning responsiveness
· Added support for the Do-Not-Track header
· Improved compatibility with SwiftKey keyboard
· Images downloaded to the Android Gallery are now immediately visible
· Improved color conversion enabling better display of images and video
· Dialog prompts better match default Android styling
· Added support for over six menu items in the Android Menu
· Resolved an error encountered when trying to load web pages without an active Internet connection