in july 2017, with another generation of products, the official family was changed to ibm z from ibm z systems; the ibm z family now includes the newest model the ibm z15, as well as the z14 and the z13 (released under the ibm z systems/ibm system z names), the ibm zenterprise models (in common use the zec12 and z196), the ibm system z10 models (in common use the z10 ec), the ibm system z9 models (in common use the z9ec) and "ibm eserver zseries" models (in common use refers only to the z900 and z990 generations of mainframe).