What are the main differences between Splunk 6.3.1 and 6.3.2?

Hello, In December 2015, Splunk issued a minor upgrade (6.3.2) which is fixing bugs. Currently we have Splunk 6.3.1 installed and I'm trying to determine the major differences between these two minor releases in order to asses if an upgrade is necessary. What are the main advantages of using 6.3.2 instead of 6.3.1? Thanks