Microsoft Office Communications Server 2007 Private Beta
Mu Han bloged about the new version of LCS, called Office Communication Server 2007 but at this momente it will be available only 2500 companies and my company is not one of them :(
I am happy to tell you that we opened a private beta of our new version of Office Communications Server 2007, to 2,500 companies. What's special about this version is that it has a lot of the VoIP capabilities built in. The coolest thing I have experienced as an early tester is the freedom to make VoIP and video calls no matter where I am without going through the trouble of VPN.
Read more at source: http://blogs.technet.com/uc/archive/2006/12/14/microsoft-office-communications-server-2007-private-beta.aspx