Firefox 3 is right around the corner, with one or more release candidates expected to debut next month featuring various performance, stability, and memory management improvements. Interestingly, all those hard optimization tweaks made during Firefox 3's development cycle have apparently paid off on the mobile side of things as well.
Built on the same core as Firefox 3, Mozilla developer Christopher Blizzard is reporting the Mobile edition of the popular open-source browser is already showing a six-fold JavaScript performance improvement over the fairly decent built-in browser Nokia ships with its N Series mobiles - which is actually based on a Firefox 3 alpha. The Mozilla folks still have a bunch of work left to but things are sure starting to look interesting in the mobile browser scene.