I've seen it; haven't used it. It does look like a reworked version of Windows XP because he Aero Graphics UI has not been put into the current Alpha Build yet. Soon they will put that in and thats great!
A Knight is sworn to Honour. His heart knows only Virtue. His blade defends the helpless. His might upholds the Weak. His word speaks only truth. His wrath undoes the Wicked.