6.2.7989.0.amd64fre.winmain.110421-1825 includes a new wallpaper and unlockable UI bits with the usual red pill trick. It’s not yet clear whether the build includes Microsoft’s new Start Screen interface. Microsoft has also updated the bootscreen to include a betta fish, similar to the one used in Windows 7 beta builds.

Microsoft revealed its new Windows 8 user interface during the All Things Digital D9 conference recently. Windows chief Steven Sinofsky detailed the company’s future plans for Windows and revealed that the firm plans to speak more about Windows 8 at the BUILD conference in September. Windows 8 includes a new user interface which takes elements from the company’s Windows Phone 7 software. Microsoft will allow users to launch apps from a tile-based start screen, which replaces the traditional Windows Start menu. Applications include live tile notifications and fluid, natural switching between applications. Microsoft has also built in the ability to snap and resize an application to the side of the screen and multitask outside of the new touch UI. The new applications will be web powered apps built using HTML5 and JavaScript, with full access to the power of the PC. Microsoft is positioning Internet Explorer 10 at the heart of the Windows 8 app experience.