The latest version delivers easier navigation for everyone, including those who are visually or motor-impaired. Firefox is the first browser to support DHTML accessibility, which, when enabled by Web authors, allows rich Web applications to be read aloud. Users may navigate with keystrokes rather than mouse clicks, reducing the tabbing required to navigate documents such as spreadsheets. Firefox is also the first browser to meet US federal government requirements that software be easily accessible to users with physical impairments.
Firefox 3.5 Beta 4 is based on the Gecko 1.9.1 rendering platform, which has been under development for the past 10 months. Firefox 3.5 offers many changes over the previous version, supporting new web technologies, improving performance and ease of use, and adding new features for users:
# Improved tools for controlling your private data, including a Private Browsing Mode.
# Better performance and stability with the new TraceMonkey javascript engine.
# The ability to provide Location Aware Browsing using web standards for geolocation.
# Support for native JSON, and web worker threads.
# Improvements to the Gecko layout engine, including speculative parsing for faster content rendering.
# Support for new web technologies such as: HTML5