To be honest, even the beta team doesnt know the release date, and we are bound by a NDA not to speak of it if/when we do.
My sincere recommendation would be as Retird suggested, plan for both. Get the DNA30 now, and plan another even greater mod for the new board.
Consider this, when the new board is released, it will likely be in short supply for a while as Evolv fills the large orders from their established Modders, you know, the ones that will order a thousand plus. Whatever (if any) stock is diverted towards the individual retail channel will sell out overnight, just like it did with the DNA30. While not certain, it is a distinct possibility that these boards will be hard to get for a while.