vCenter/ESXi 5.5 to 6.0 license question

Stupid question here. We've been running ESXi 5.5 for a long time and then recently got some new hosts that were licensed for 6.0 but had to downgrade the license to 5.5. Now, we are going to be ordering some new hosts that will be licensed for 6.0 but we want to stick with 6.0 going forward. I know we have to upgrade our vCenter server to 6.0 first in order to place the new hosts in vCenter, but since all of our hosts and vCenter is licensed for 5.5 do we need to upgrade our license to 6.0 (and is there a cost for that?) first before we upgrade vCenter? Aplikasi membuka situs yang diblokir pemerintah. Also, is this the right path to upgrade to 6.0:
-Upgrade VCSA
-Upgrade vCenter Update Manager
-Upgrade ESXi Hosts
-Upgrade vmware tools/hardware

CorelDraw Graphics Suite X7 Free Download setup for Windows. It is full offline installer standalone version of CorelDraw Graphics Suite X7 32 bit 64 bit. CorelDraw Graphics Suite X7 Overview. Download corel x7 full version.