The very first screenshots of Windows 8 running on the Aero Lite UI have finally surfaced. At first glance, you may not notice much difference. You can click on the screenshots to enlarge them.
You will notice right away that there is a much “flatter” look, similar to the Metro UI seen on Windows Phone 7. Only some of the Metro UI elements revealed yesterday are found in these screenshots. For example, the back and forward buttons remain default, but the set of buttons in the top-right hand corner of almost every Windows has sported the “Metro UI” look. It is likely that the Aero Lite UI is still being worked on.
In addition to these screenshots, winreview.ru also suggested that this may be the new basic Aero theme – drawn from the conclusion of the name. Features such as Aero Peek and Window Thumbnails are still preserved.
Although these screenshots may not be overly exciting, these screenshots give us further confirmation of the rumors and leaks we have recently witnessed.
At this moment, Windows 8 RTM estimates are still sketchy, with most clues hinting towards a date sometime in 2012.
Source: First Windows 8 M3 screenshots of Aero Lite UI | Windows 8 Center