Well I hope you should be. If you are interested in joining the ‘Centro’ Beta please go to http://connect.microsoft.com, click on Invitations, sign in with your Windows Live ID (Passport ID) and enter the following invite ID: EXTR-GHBC-JCJM.  You will be asked to take a short survey.  Once you complete the survey look for an email from msftconn@microsoft.com. If you don’t already trust this address, please add it to your trusted email addresses.

It’s as simple as that - check out Windows Server Centro on Connect here: https://connect.microsoft.com/centro