This is incorrect. As soon as you place your deposit, you're in the queue. The queue tool didn't exist until roughly Summer 2017, but deposits started March 2016. There was a period of more than a year where everything was opaque.

I recall it being clear that, just like the S and X launch, the most expensive 3's would ship first.

On another thread I asked if you have a source for this - I'll ask again, because I can't find one. I didn't follow the Model S/X stuff too closely leading up to the Model 3 (I don't spend that much money on a depreciating asset). I did put my Model 3 deposit down the first day possible, and I do not remember any such "clarity" you describe around timing and expectations.

Then again, originally my standard range Model 3 was estimated "Feb-Apr 2018" or something like that. It now just says "Late 2018" and I have no faith that will be met, either.