This document summarizes the new features and timeline for the upcoming Firefox 3.1 release. Key points include improved JavaScript performance up to 2x faster than 3.0, support for private browsing with no saved history or cookies, enhanced search capabilities for the Awesome Bar, improved CSS and HTML5 support, and new APIs like geolocation for developers. Firefox 3.1 beta releases are planned for October/December 2008 with the full release in early 2009.