Windows 10 technical preview

I installed the 'Windows 10' Technical preview version on my macbook using parallels.

http://windows.microsoft.com/en-us/windows-10/about

The initial appearance.

The Start menu is back where it used to be.

 Improved search functionality.

Notification bar. 

Settings app.

 Simple and cute task-bar UI.

Multiple desktops_ So you can group apps as you see fit.

Power button of start menu.