From the current state of the product (and speed VMware team is catching up) I think ETA is ~6 months.
P.S. It was fun asking VMware team "why should anybody buy an entry level EMC?" and hear the answer "We don't know!" turning EMC people in the room RED 
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Supposedly the new vSphere 5.5 vSAN feature is in BETA and everyone can try/use it.
Whenever it goes GA does anyone know which users will be cut off from using it??
That is, will it only be given to Enterprise Plus users or to Enterprise and Standard also??
It is so much better than VSA despite relatively more work to figure out networking that it should be for ALL versions...