So... what else is new?
It sounds like this is mainly some firewall/IDS stuff moved onto the virtualization mumbo jumbo, complicating those even more, increasing the complexity of every aspect your basic security foundation (both the machine infrastructure and your add-on-top-secrurity devices). The news here may be that there are fewer clicks, for a perhaps even worse configuration.
What is really the problem with hypervisors is when the hypervisor gets cracked (as has happened with for example VMWare), and/or when your insecure (as they typically are) storage network gets compromised. But these things are harder to solve, and doesn't sell VMWare, so of course they don't talk about that. Or really , they aren't hard to solve, you just can't do it with the VMWare vision of running all your (virtual) machines in one big fat multimillion dollar VMWare cluster. Instead you just have to think through what things can fall together, and cluster those. Then you separate the clusters. And that you can do with free software too, there is no need to buy a whole deck of crappy proprietary windows apps from VMWare to "manage" your hypervisors.