I just posted this at Electrek, but thought I'd add this to the discussion here too:
So I am just going to put this out there, although I know it is in vain. In a way, Tesla can only blame themselves as with too much secrecy, fan rumors start and if they don't shoot them down in time, these fantasies will become baseline expectations. So when the company releases the product without these, people are disappointed and the company is like: "wait, what? when did we ever say this will have a HUD?" I have seen this with other tech companies and product launches too.
This whole thing started when someone speculated based on Elon's "spaceship" comments, that there may be a HUD involved. Fact is, the Tesla fan community (myself included) kind of built up this expectation for a HUD, but the company never said anything about that. They always showed a single screen in the middle and at least 300k people who reserved after the reveal did so knowing that.
Also, there have been many cars in the past (like my grandma's Yaris, which I have driven quite a bit), probably some currently as well, that only have a single instrument cluster in the center. The question will be, how well the screen is placed for the key data, like speed, to be easily readable by the driver and how the final version of the UI looks? (The version shown during the reveal seemed a little spartan and cluttered at the same time, but that was a year ago).
Let's reserve final judgement until the production design is revealed / test drives.