This seens to be an unpublished, unfinished, unindexed document about a nonexisting product whose project status I am very confused about, yet the concept is absolutely intriguing.
So I'm pretty sure that someone has already designed something similar as open hardware that you could fork and customize. I'd start with Googling "kicad eink arm". From memory, the Watchy eink watch with esp32 comes to mind. And I think there are arduino epaper driver boards on Amazon, too.
The idea has already been approached, but the realization of a specific machine for that has never been tried.
Do you know the project author?