Forefront Security for OCS 2007 RTM was released and it is available for download.
FSOCS provides fast and effective protection against IM-based malware for OCS 2007 and OCS 2007 R2 environments by including multiple scanning engines from industry-leading security partners. FSOCS also helps reduce corporate liability by blocking instant messages containing inappropriate content.
This release includes:
· 64bit support
· Support for OCS 2007 R2
· Support for OCS 2007 Enterprise Edition server roles
· Integration with OCS 2007 Access Edge role to protect corporate IM from external public IM threats
· Localization in 11 languages
Download it from here: http://technet.microsoft.com/en-us/evalcenter/cc509001.aspx
Read more at source: http://communicationsserverteam.com/archive/2009/03/16/383.aspx