For those of you who enjoy staying on the cutting edge, Mozilla has released the first alpha
of Firefox 3.1. This latest version, code-named Shiretoko, is built on top of Mozilla's Gecko 1.9.1 rendering engine which is also in development and promises better support of web standards.
Shiretoko is aimed at developers and testers who want to participate in the development by helping to spot bugs, though anyone can give it a try
– it won’t overwrite your existing Firefox 3.0 install.