Knowing that Microsoft wants to spread Windows 8 to the public, they must release it during a good time.  Likely, Windows 8 RTM will be released in the fall right before school and winter shopping.  Partners such as Asus have already shown off demos of Windows 8 Tablets.  Until then, the release candidate is being tested and refined to optimize the user experience, especially the mouse and keyboard input.
Picture
Example of the new Windows 8 Metro Start Screen
 
As the title said, the beta is officially available.  You can download it at:  http://windows.microsoft.com/en-US/windows-8/consumer-preview?ocid=O_WOL_W8P_OandO_Home_EN-US

Tell me what you think in the comments.

Enjoy the beta! =D