Mozilla has released the first beta version (pre-beta) Firefox 4 browser. The new version is completely different from the design to boot load time. Starting from design, it has added some controls at top menu, then visuals seem to have rounded corners and new icons and the biggest change is Firefox tabs.
Yes, the new version Firefox 4, the tabs are located at the top of the browser like you have seen in Google chrome (above the address bar) It also features a new engine with faster boot load time.
Firefox 4.0 pre-beta nightly builds – Download
