I would be shocked if Tesla does a significant update to the interior of the S/X in the near future. The only reason I say that is that we are close to the introduction of the Model 3, and Tesla can't afford any extra issues with the S. None. Tesla has spent several years getting the Model S right (or better), and there have been numerous posts all over TMC describing worry about what will happen at the service centers when the 3 is out. Tesla is running at full steam, and they have a lot to focus on. If a new interior is released and there are any issues, it will be disastrous. Adding issues to the S would challenge the already overwhelmed service centers, who will need to be ready to deal quickly with any issues with the 3. The service center personnel would also have the double whammy of having to learn about the 3 and the new S interior. Right now, there are definitely still issues with the S/X, but since they are well established models, most of the fixes are probably readily known. I agree that the S will likely be redesigned in the next few years, but Tesla's model of constant substantive updates may stretch the typical 5-7 upgrade cycles we see with other automakers. I think they may continue more incremental updates of the interior (similar to the premium seats upgrade) for a while and then do a bigger redesign once the 3 has settled in.