No, there is no a specific GEN 0300 package.
The upgrade is performed applying PTF RO99732
After that PTF has been applied, the Controller joblog will show:
DCI1000I: CA DYNAMIC CAPACITY INTELLIGENCE FOR ZSYSTEMS
DCI1000I: V1.5 GEN 0300
After RO99732 has been correctly applied, all the confirmed PTFs must be applied also.