Originally scheduled to go live mid-September, Mozilla has pushed back the release of its Firefox 3.6 Beta by another week while offering an early "test build" for those who just can't wait to tinker with it from today. Codenamed Namoroka, this minor upgrade is expected to bring Windows 7 compatible taskbar thumbnails, visual tab previews, and will be based upon the latest version (1.9.2) of the Gecko engine.

The visual tab previews feature is not enabled by default, according to Lifehacker, but you can enable them by heading to about:config in your address bar, searching for browser.ctrlTab.previews, and setting that value to "true." Furthermore, this early test release should include built-in support for Mozilla's Plugin Check feature.

Other improvements include faster JavaScript handling, bookmark synchronization, better form completion tools, and page load enhancements. You can download the Firefox 3.6 Beta test build here and don't hesitate to share your thoughts in the comments box below.