I do not understand one thing! Microsoft late leaked builds what is new is in windows 8. For example this: Windows 8 History Vault Screenshots. And Face recognition. Yester a demo of windows 8 and displayed a Windows 7 desktop, without the added features that on the Internet is told. And previewed. I'm wondering why that first leaked builds and screenshots and now a Metro-onion and the Windows 7 desktop witouth the new features? can someone answer me?
They were only showing off the new UI which is replacing the start menu. Many builds are made by different teams, that team is working on the new UI, and the builds that have leaked, are the changes coming to the Desktop UI. Eventually all the builds will be merged into the final Windows 8.