Elon Musk took to Twitter Sunday evening to tease updates to Tesla's troubled Autopilot feature.

The CEO said he had a "promising" call with German technology supplier Bosch, which makes the radar sensor used in the company's Autopilot system. "Looks like significant improvements possible via [over-the-air] software update," Musk wrote.

He went on to thank both Bosch and camera supplier MobilEye for their "help and support in making Autopilot better," and said all criticism for Autopilot-related incidents should be directed at Tesla.

The company's Autopilot feature has come under fire in recent weeks after a man named Joshua Brown died when his Tesla—operating in Autopilot mode—collided with a tractor-trailer truck on a Florida highway. Tesla claims its Autopilot system was not at fault for the crash, though the National Highway Traffic Safety Administration is investigating.

Musk didn't share any other details about the possible upgrade, as he was busy last night and early this morning with his other company, SpaceX, which successfully landed another rocket back on Earth. He did, however, have time to address a recent call by Consumer Reports for the feature to be disabled:

Tesla customers are v smart & don't want media speaking on their behalf abt Autopilot. Recent poll: 0.0% want it disabled -- not 0.1%, 0.0%. — Elon Musk (@elonmusk) July 17, 2016

Meanwhile, we should soon hear more about a "Top Secret Tesla Masterplan" Musk alluded to last week. This morning, Musk tweeted that he was back to work on that.

Tesla added Autopilot functionality in October via a software update, but it stressed that the feature was not fully functional. Drivers still need to be in the driver's seat with their hands on the wheel, Tesla said at the time. Not everyone has paid attention to those instructions, though.