We are planning to upgrade IM&Presence to 10.5.1 SU3 (10.5.1.13900-2). Below our current version of our UC applications:
Active Master Version: 10.5.1 (10.5.1.10000-7)
Active Master Version: 10.5.1.10000-9
Correct me if I'm wrong, on CUCM and IM&Presence compatibility: IM&Presence Service and Cisco Unified Communications Manager software based versions must match regardless the patch. For example IM&Presence 10.5(1)SU3 are compatible with CUCM 10.5(1).