I think I'll be at the point of canceling if I don't get more info on my order by the beginning of next week. I ordered on 3/24, had the car built on 4/12, and an ETA of 4/20 that hasn't ever changed. Meanwhile, there's a Kona Blue / white OTT stripe at a dealership 40 miles away from me, with the 3.73 axle and 19" wheels. No Brembos, but I feel like the tires/wheels are the more important part of that package anyway.
So at this point I don't think I'm waiting for any good reason.