VMware has a great landing page that goes into details on all the new features and functionality.
The new DPU functionality, with the ability to offload network services, is a great advancement. How will this change how you architect future datacenters? When combined with the vSAN 8 Express Storage Architecture, there are many opportunities for optimization with next-gen hardware.
We had a recent situation where a virtual appliance (Avamar proxy) was mistakenly deployed configured with the IP address of the gateway. This caused the hosts to be unreachable from vCenter. After finding the offending VM and shutting it down from the console, the ARP tables either had to be cleaned up (you could also allow them to time out but that could take up to 20 minutes)