Proud to announce that in last iteration of CalEPD we added touch support. A small code-snippet to inject Touch in the Gdew027w3T (2.7 inch from Goodisplay)
This is meant to be used as a component in the ESP-IDF Framework:

#include "FT6X36.h"
#include <gdew027w3T.h>

// INTGPIO is touch interrupt, goes low when it detects a touch, which coordinates are read by I2C
FT6X36 ts(CONFIG_TOUCH_INT);
EpdSpi io;
Gdew027w3T display(io, ts);

Priced at about 15 u$ this epaper is very cool to build small UX interfaces using epaper and ESP32.