Sept. 18, 2017:  Db2 12 FL501 (function level) has been certified by SAP.

Note that SAP NetWeaver 7.52 requires this function level. See SAP Note: https://launchpad.support.sap.com/#/notes/2302997  (requires SAP user-id).   

What's new in Db2 12 function levels

New Db2® capabilities and enhancements are continuously delivered in a single maintenance stream as the code becomes ready. You can activate the new capabilities in a data sharing group or Db2 subsystem after a function level is delivered. A function level corresponds to a single PTF that enables the activation of a specific set of enhancements that shipped in previous per-requisite or co-requisite PTFs. The activation of a function level results in the activation of all lower function levels.

Read more: https://www.ibm.com/support/knowledgecenter/en/SSEPEK_12.0.0/wnew/src/tpc/db2z_db2functionlevels.html