Some clients are part of the DB2 V12 ESP program.
Which release of Mainframe Application Tuner is required, and what PTFs are needed for toleration of DB2 V12?
IBM is doing is doing controlled code drops on DB2 V12. They anticipate an October 2016 GA date.
If that date holds we are targeting support for DB2 V12 in our 3rd and final MAT 11.0 incremental targeted for the end of October. Keep in mind that we are dependent on IBM GA status for our final support level.