Not a single word in there about showing a printout! Nothing!
It sounds like your electronic ticket -- existing in the ether only -- will be based on your ID document number, and nothing further.
By the way, note that the rules apply to both entry and exit. No longer any paper ticket to quickly flash when exiting to show you're ticketed to that station; you'll have to fish out your passport, wait in the manual line, then wait again while they scan your passport to bring up your ticket.