The Microsoft Forefront Server Security for Exchange 10.0 Management Pack for Operations Manager 2007 has released to the Web and is available via http://www.microsoft.com/downloads/details.aspx?FamilyID=147d908c-9dc4-4f90-81b2-ee0764300be2&DisplayLang=en
This MP has a dependency upon the recent released backward compatibility MP update 6.0.5000.12 (or higher).