If you can recall, vSphere 5.1 wasn’t supported with VMware View 5.1 release, this has been quite frustrating for customer, there was a post on this by Josh Townsend here. what i most like about the post was this photo
Now with the new upgrade to vSphere 5.1.0a the photo changed in another blog post by him in this link
also there is another photo in VMware Blogs here which indicate this support.
there is also a KB article published on he same topic on VMware website that you can find here
so Now Happy View 5.1 with vSphere 5.1.x