CrystalXP.net

While an alpha version of Firefox 3.6 is now available from this page, a new theme for Firefox, based on the first mockups interfaces of Firefox 3.7 and Firefox 4.0 unveiled recently on Mozilla Wiki, was published: it's Strata40.



Made by SpewBoy from deviantART, Strata40 customizes your Firefox browser to make it look like Firefox 4.0.



Available for Firefox 3.5 and 3.6a2, you can download Strata40 by clicking on this link.

Of course before any installation, you should read the instructions of the author. To get the complete theme, you need some addons.