On October 26, Microsoft has released the lastest Windows 8 OS which is also used on Microsoft tablet Surface.
From the Windows 8 team:
With improvements in fundamentals, enhanced storage and connectivity, newly architected subsystems, the “fast and fluid” user experience, and the WinRT platform (to name a few), Windows 8 has literally thousands of new features. We did a record number of blogs posts (and videos) and did not even come close to covering the full breadth of Windows 8. There’s much left to learn about and discover in the product.
Some of the most exciting innovations with Windows 8 are yet to come—the innovations from developers building apps on the new WinRT platform. Today, the Store is open for business and we’ll rapidly expand to over 200 markets around the world. The opportunity for developers around the world to deliver innovative (and profitable) apps is unique with Windows 8. We’re excited to see the work developers will be bringing to Windows 8. We’ll also have a chance to talk more about the Windows 8 platform at the next BUILD conference recently announced.