From Julien on Hackaday.io:
FPGA eink controller
ice40 FPGA based custom board to control eink display
The design files and source code are available on GitHub:
julbouln/ice40_eink_controller
julbouln has shared the board on OSH Park:
eink controller
Here is a video of the project in action:
Test with a homemade WIP epub reader, using ifusb interface ~ 1 fps