Ray Lucchesi from RayOnStorage Blog comments:

VMworld2013 is going on in San Francisco this week. The big news is the roll out of network virtualization in NSX and vCloud Hybrid Service (vCHS) but there were a few tidbits in the storage arena worth discussing:

A nice overview of all the storage changes from VMworld.  Notice that Virsto is going to be a separate option purchase…called Virsto.  Only time will tell if these new storage pieces are going to have room to grow to their full potential.

Read more at: Storage changes in vSphere 5.5 announced at VMworld 2013