Microsoft MacBU Unit launched a new partner app called "Communicator for Mac" — "Messenger 5, 6, and 7 included support for both Windows Live users and Office Communications Server users. With Office for Mac 2011, we;'re providing dedicated apps for each network. Moving forward WL users will continue to use Messenger for Mac and OCS (aka Lync) users will start using new Communicator for Mac. In order to best support productivity with Office apps and features of both partners, it was time for us to separate the apps. Separate apps will allow us to provide best experience for both sets of users," stated MacBU.
Messenger for Mac will continue to be a free download for Mac users that want to access their Windows Live network of contacts.
Communicator for Mac will be available to organizations that use OCS.