Forefront

I really didn't expect this to be a public beta so soon!

An integrated security system that is easier to manage and control
Microsoft® Forefront™ codename "Stirling" is an integrated security system that delivers comprehensive, coordinated protection across endpoints, messaging and collaboration servers and the network edge that is easier to manage and control.

Download the beta here.

Personally, I am really excited over the direction that FCS v.Next and 'Stirling' is going.