A head's up from Microsoft: Due to the overwhelming response for the recently released Windows Intune Beta, Microsoft had to close the Beta for now. Here's the official statement:

Due to the overwhelming response to the beta invitations, we are no longer accepting new participants into the Windows Intune beta program as we have exceeded our pre-set account limit. We appreciate the high level of interest from our partners and customers and are hopeful that this early response to the beta will result in solid feedback to inform product development. If you are interested in learning more in the meantime, you can visit our Windows Intune homepage and watch the Windows Intune Overview Video.

I've posted a short preview of Windows Intune as well.