Better late than never?
Remember when EMC (and Chuck Hollis) referred to storage virtualization as "Frankenstorage"? (Read http://chucksblog.emc.com/chucks_blog/2009/02/whither-frankenstorage.html).
Call it divine intervention but I guess EMC/VMware discovered that there might be something to virtualizing storage after all... as long as it's internal server storage so it doesn't disrupt EMC's core business. Oh... but now there's ViPR in case you do prefer to virtualize your array storage after all. Hypocrisy and late-to-market tech should never get in the way of highjacking your customers.
Just remember, this is not your dad's VMware. This is all EMC. I can't wait to see what the vSAN maintenance bill looks like after the EMC... er... VMC...er... VMware rep gives you a "quarter end deal you can't refuse".