Why should you upgrade? Let’s see. They claim to have improved tabbed brows­ing which is true. Most of the new fea­tures were already avail­able to Tab Mix Plus users. How­ever, it’s a step in the right direc­tion which is always wel­comed. You’ll also find a built-in spell check­ing sim­i­lar to the spell check­ing in MS prod­ucts and inte­grated phish­ing pro­tec­tion. There’s an improved Add-ons Man­ager uni­fy­ing exten­sions and themes into one inter­face and a brand new Search Engine Man­ager. Finally, there’s a ses­sion restore fea­ture as well as Live Titles and it uses less mem­ory than its pre­de­ces­sor. Over­all the browser has changed its look and feel but remains still prac­ti­cal for every­day use.

If you don’t mind that some of your exten­sions may not be com­pat­i­ble this time get a copy and see for your­self. You’ll find exten­sions and plug-ins at the usual place – that is to say right over here. If you’re look­ing for a build for the Win­dows x64 plat­form this is the place to go. A 64-bit enabled build with the final release should be avail­able soon. I have already posted some infor­ma­tion on good exten­sions so have a look at them first. Luck­ily, Tab Mix Plus, which is my favorite exten­sion, is already avail­able for Fire­fox 2, among oth­ers, of course. Well, it’s only a dev-build but I don’t mind since it still works like a charm.