Not much actual work done, but some packages started to arrive. One of them is a new batch of the displays. They seem to be slightly different from the ones I had before:

(Top one is an old one, bottom one is the new one.) While they should be compatible, and the flex connector ends at the same length, the plastic enclosure of the display is a bit shorter. Which is fine by me, because that means it won't be close to the edge of the PCB. But will the new display work as well as the old one? I quickly soldered one to one of the version 3 prototypes to test:

Seems to be perfectly fine. They also come with a much better adhesive tape on the back, so maybe a version without the case will be actually viable for them.

In other news, the PCB and laser-cut pieces for the version 4 are on their way from @Elecrow already:

Can't wait to see how they fit together.