Who care about quarter to quarter guidance, except the investors and short sellers? What actually matters is how Tesla executes compared to their long-term plans. Despite all the delays and "failed" promises, they keep exceeding their multi-year goals.
Next year (March 2019) they will show the model Y, the smaller SUV based on the model 3 platform, but I doubt they'll start making them. The next year after that is the roadster. It's their secret plan that has been out on the web for years.
Just check this out: http://www.autonews.com/article/20140113/OEM/301139981/audac... (or watch any JB Straubel's keynote)
They're killing it. In fact, the naysayers just keep moving the goalpost.