Actually, one had already been finished, but during the late concept phase we discovered a problem in the first design, which would have led to an immense additional and unnecessary load on the bitcoin blockchain. On the long run it would likely have been unsustainable. We have solved that problem, but the amount of necessary work changed.
Due to that, we're rather hesitant to release any etas.

There will a very rough and none binding roadmap in a couple of days though.