Following the announcement of VMware vSphere 5.1, I came across this interesting KB article
In a nutshell:
This is important as VMware View runs on the vSphere platform, so if you are looking to upgrade the hypervisor to 5.1 then you may run into some support problems should you be running VMware View as well.. Dont sweat, sources tell me this is a temporary obstacle and will be cleared up in the near future, for now my advice is to hold off the upgrade or run separate clusters for your view environment if you absolutely need the vSphere 5.1 features sets.
