Actually the links I included above have links to datasheets for each display. You have to register an account before downloading the full pdf data sheet which I haven’t done yet, but that appears to be free. I don’t have the background to interpret them but it sounds like you might? Obviously can’t vouch for how meaningful they are.
EDIT: Well, registration is free, but downloading files requires either a paid membership or earning “P-coins” by either uploading files like photos or datasheets yourself. Which explains how they have so many datasheets.
As for the driver, (at)nrp is on the record saying the display port supports touch, it just wasn’t on any roadmap of theirs last summer: Touchscreen that can use a stylus (for creative people) - #17 by nrp. I took that to mean some form of touch controller is present in the main board (though I obviously could be reading too much into that)