A new foldable device by TCL has turned up online. It appears to be the tri-folding tablet that TCL talked about in 2020, which can fold along two separate axes. In this particular instance, one part of the screen is being used as a makeshift keyboard.
https://www.notebookcheck.net/TCL-s-tri-folding-tablet-shows-up-online-via-a-new-leak.524061.0.html