The latest point release of IBM Mobile Connect, IMC 6.1.5.1, is available on the Recommended Maintenance page.  You can also find the latest builds of 6.1.5 and 6.1.4 in this location.

In 6.1.5.1 there are new features including the ability for IBM Mobile Connect to act as a True Load Balancer in front of Traveler.  It will have the concept of a Traveler HA Pool Object!  
This means IMC can now sit in front of the pool and all of the servers in a pool are defined in this HA Pool Object. IMC's existing load balancing algorithms can be used to balance the traffic and help Traveler to manage users and follow their sessions when changing Traveler servers.