There are 2 new product categories being added to the WSUS Products and Classifications dialog, both under the product family “Office Communicator Server and Office Communicator”.
The two new categories are:
Office Communications Server 2007 R2:
The Office Communications Server 2007 R2 product category will include updates for the Microsoft® Office Communications Server 2007 R2, including service packs, critical and security updates.
Office Communicator 2007 R2:
The Office Communicator 2007 R2 product category will include updates for the Microsoft® Office Communicator 2007 R2 , including service packs, critical and security updates.
Source: WSUS Product Team Blog
