Microsoft yet again has a new OS in store for us. A brand new user interface with an entirely new application model, support for a new architecture that enables Windows to run on smaller form factors, new touch-focused features, huge leaps in Hyper-V capability way beyond the competition, huge enhancements in remote desktop capabilities, new priorities for managing many servers as if you were managing one, new ways to secure data and grant access—and the list goes on.
Download Windows 8 Preview
Note: You can’t uninstall the Windows 8 Developer Preview. To go back to your previous operating system, you must reinstall it from restore or installation media.IT Blog