Last night, Apple's WebKit group announced the new SquirrelFish Extreme, a major new retooling of the SquirrelFish JavaScript engine originally announced in June. The update comes before SquirrelFish even had the time to make it into production versions of Safari.
>> SquirrelFish Extreme promises to speed JavaScript in Safari 4.0
>> SquirrelFish Extreme promises to speed JavaScript in Safari 4.0