Microsoft Windows 8 latest UI has been leaked in the video

Microsoft apparently did not hold the secret of Windows 8, in a video of the marketing department, Microsoft's two lenses leaked the current status of Windows 8, we can see from the picture Seeing that the taskbar has changed quite a bit, the start button has become more integrated, and there seems to be some new things in the taskbar. Look at the picture together:
Windows 8 7927 screenshot from WinRumor
Copy of Build 8059 information

the following is an image of Microsoft's Windows 8 Explorer more leakage, we can see from Office Ribbon UI 2007 has been Embedded in the Windows gene, the larger buttons and intuitive sorting operations subvert the traditional toolbar + menu bar operations. Depending on the content of the window, the Ribbon UI can be customized in a variety of forms. Figure: