With Tesla’s Autopilot 2.0 supposedly “coming soon,” Elon Musk took to Twitter over the weekend to tease Part 2 of the “Top Secret Tesla Masterplan.” Longtime Tesla followers will recognize this as the plan Musk formally introduced in August of 2006, which described Musk’s eventual goal of releasing the Model 3, the company’s affordable EV currently slated for a late 2017 release.

So what can we expect from Part 2 of the plan? Nobody knows but Musk is hoping to share more details “later this week.”

The timing of Musk’s Tweet is certainly significant considering all the bad press Tesla has received over the past few weeks. The automaker revealed in June the National Highway Transportation Safety Administration (NHTSA) was investigating a deadly crash that killed a Model S driver while the company’s autopilot software was engaged.

Tesla described the situation in a blog post last month:

What we know is that the vehicle was on a divided highway with Autopilot engaged when a tractor trailer drove across the highway perpendicular to the Model S. Neither Autopilot nor the driver noticed the white side of the tractor trailer against a brightly lit sky, so the brake was not applied.

If Musk’s new plan does entail Autopilot 2.0, autonomous driving should play a big part of Tesla’s upcoming announcement. According to sources speaking to TechnoBuffalo, Autopilot 2.0 will feature a dual camera system capable of recognizing and reacting to stop signs and traffic lights with no driver input.

Tesla recently made a bid for solar energy company SolarCity, so perhaps that’ll also be a big part of what Musk has planned. We should know more later this week.