That is correct. We have just a handful of chips right now and all are used for R&D and profiling including occasional
rapid unscheduled disassembly as we look for the limits of the chip

. We are expecting the engineering lots in a few weeks time. Luckily our schedule was not affected by the recent
Taiwan earthquake. Our total hash power has increased due to our
Gldani immersion cooling datacenter getting to full capacity.
So my information was correct 6 pages ago that you do not have a reference board built yet.
https://bitcointalk.org/index.php?topic=1291890.msg13810862#msg13810862I would think not having the engineering samples "for a few weeks" that an end of March product release for home miners is an aggressive (and likely impossible) task. Having said that, I think if you haven't ran a full batch of chips then you are expecting everything to go without a hitch with Batch 1 chips. I think that is also a very ambitious expectation for a new 16nm chip.
I am going to go out on a limb and say end of April or beginning of May is a better bet.