Microsoft decides to change their Windows logo in more like a window like not a flag, so the first product to use it is the Windows 8 OS.
This is their statement from their blog about the logo changes
With Windows 8, we approached the logo redesign with a few key goals on mind.
- We wanted the new logo to be both modern and classic by echoing the International Typographic Style (or Swiss design) that has been a great influence on our Metro style design philosophy. Using bold flat colors and clean lines and shapes, the new logo has the characteristics of way-finding design systems seen in airports and subways.
- It was important that the new logo carries our Metro principle of being “Authentically Digital”. By that, we mean it does not try to emulate faux-industrial design characteristics such as materiality (glass, wood, plastic, etc.). It has motion – aligning with the fast and fluid style you’ll find throughout Windows 8.
- Our final goal was for the new logo to be humble, yet confident. Welcoming you in with a slight tilt in perspective and when you change your color, the logo changes to reflect you. It is a “Personal” Computer after all.
We hope you enjoy our new logo.
Principal Director of User Experience for Windows
So, that’s it new logo new kind interface for the Windows 8 and of course new experience for the user.
Source and more history about Windows logo : windowsteamblog.com