Forefront Endpoint Protection 2010 would not work or install on a Configmgr 2012 beta 2 environment . Therefore you will need Forefront Endpoint Protection 2012 Public Beta .

It seems that the Client Agent Version is still  FEP 2010 as the client version number is still the same as from FEP 2010

It is available as from today at http://www.microsoft.com/downloads/en/details.aspx?FamilyID=b64c2029-0f56-4606-ba0c-ea92e03541f5&displaylang=en and gibe it a test drive .

Hope it Helps ,

Kenny Buntinx