Alright, I did the simplest thing and called Nick at Wagner. He told me that the i/c's have been built, and there are 50 units sitting in U.S. Customs awaiting clearance. Wagner has been told to expect a wait of 2-3 weeks for the units to clear customs and get to them.
I asked him about testing, and he said Wagner plans to work with a shop in California to do their tests. I'll wait and let him explain the details when he is ready.
So -- we are very close! He also said they plan to put together a group buy once they have the units in hand, so be patient. I'm still amazed that we will have a bespoke unit for our cars. Very cool.