The image you see above is apparently the first teaser for the Tesla pickup truck. The electric pickup is set to get its own reveal later this year. Apparently, it was first shown last night at the Tesla Model Y reveal event appearing on the screen at the back of the stage following the playing of the credits for the seminal 1982 science fiction flick Bladerunner. No one appeared to have noticed.
The late Steve Jobs, as CEO of Apple, would often have a secondary product to divulge at that company's big reveal events. Tesla has, in many cases followed suit. The most notable example was having the next generation Tesla Roadster roll from the back of the Tesla Semi after its reveal.