'It's a window... not a flag', Microsoft unveils Windows 8 new logo

Microsoft just unveiled the new logo for its Windows 8 operating system, made by design agency Pentagram. The new logo started from a simple question asked by Paula Scher of Pentagram “your name is Windows. Why are you a flag?”, from that question eventually led to the development of a four-paned window with a great influence on Microsoft's Metro style design philosophy of being “Authentically Digital” and the new logo will also welcome you with a slight tilt and change color based on your desktop.

Look back at past Windows logos:

Source: The Windows Blog