Well, 12 days is close to a week, right? I put up the dev notes on http://tenfourfox.blogspot.com/2010/12/beta-8-now-available.html and you can get it now from http://www.tenfourfox.com/ . Notice new G5 and G4/7400-specific builds (along with G3 and G4/7450). The G5 version has very interesting tuning to maintain stability; the interested can look at about:buildconfig. It had to be done like that because -mcpu=G5 (let alone -fast) makes a very unstable Firefox. I'll have to debug this later, but the tweaks still squeeze out around 15% compared to 7450 on a G5. Lots of good stuff; see the release notes.