Right. My fear is that Tesla will make changes to the S and X to make them more similar to Model 3/Y and cheaper to build and support. With only a horizontal screen, e.g., they would need only one version of the firmware to operate the screens instead of the two (or more?) they have now, for the horizontal and vertical formats. That would probably save them a lot of trouble, time and effort in maintaining and improving the firmware over time. I could perhaps live with with a horizontal screen (if it were nicely integrated into the dash) but only if they keep the instrument cluster. And I would not want them to replace the Model S/X steering wheel and associated controls with the cheaper/simpler Model 3/Y version, which forces you to use the center screen for more adjustments. But total standardization of the firmware would require one single horizontal screen and the same steering wheel controls, so I fear that is the direction they will go.
If there is an updated interior, I hope it allows more choices of colors and finishes. This business of only allowing three arbitrary combinations is ridiculous at this premium price point.
I also dread the possible exterior changes. Right now, even a 2012 Model S is still a beautiful car, and still looks modern to my eyes. I would not mind some minor tweaks, but I hope Tesla does not make changes just for change sake, or for "fashion" sake. Better headlights might be good (but only if they do not coast a zillion dollars to replace when broken) and maybe a horizontal light bar in the rear as a token to today's style (and how about amber turn signals in the rear while they are at it), but nothing too drastic, please. I'd hope to see the sunroof option again, but I won't hold my breath.
Unfortunately, I suspect they would not fix some of the functional things people have long complained about, such as the large un-wiped areas of the windshield, the lack of defroster vents for the side windows (ridiculous for this price point), lack of adjustable shoulder belts, and the various noise and air leaks (much of which comes from the frameless windows they insist on using).
Oh, and keys. I'd hate to lose my fob -- it has not failed me, and I am wary of relying on my phone as the key.
If they replace the heater with a heat pump, which seems promising for efficiency and effectiveness, I hope they use one large enough for the larger interior volume of the S and X, and don't just try to "make do" with the 3/Y version....and that they have done some through thorough cold weather testing.
Count me as pessimistic, I guess. Hopefully we will know more next week at the earnings call....