It would be nicer to know for sure they’ve got it entirely right before they start, because we know they won’t stop to correct anything, if they’ve missed some little detail.
The lesson from past group buys seems to be that the eagerness to get it going leads people not to carefully double check everything, even the things that got fixed earlier, to make sure everything stayed fixed all the way to the production line. Samples get improved or not — the test is whether the actual production gets all the improvements up to date.
Including the code as well as the hardware.
But you know all that. No point repeating it.