Morning all,
This slipped under my radar on Friday, VMware have fixed some huge bugs such as inability to enable HA on ESXi U3 hosts in this release. But they’ve also pulled the original U3 update due to issues with failing rollup upgrades! But you first need to patch vCenter before upgrading to ESXi U3b
vCenter Patch Notes:
https://docs.vmware.com/en/VMware-vSphere/7.0/rn/vsphere-vcenter-server-70u3b-release-notes.html
ESXi Patch Notes:
https://docs.vmware.com/en/VMware-vSphere/7.0/rn/vsphere-esxi-70u3b-release-notes.html