Well, this is suppose to be simulating Windows XP, so it's nothing new in terms of the GUI itself but in terms of web design. it is new, because it's not your usual operating system on your pc, it's a website, that is the important difference, it's a website on the internet and not your operating system for pc.
But anyways, it's actually very hard to do "truely" unique stuff, because we are the new generation which born after billions of people, so alot of stuff have been invented, like cars, airplane and stuff, but we improve on existing stuff to make our uniqueness. So if you say it's not unique and new, it's partially true and partially untrue ^_^;
Anywys, let's drop the subject and just stick to the topic about whether you like it or hate it, and give your opinions, thanks.