I think you could transmit data by it if you directly can send them to a target place - what seems they did. If you toggle them between the sender and receiver you could transmit data similar to Morse code. Neutrino reached mean 1 - no neutrino 0.
But you just could use it if traveltimes for each neutrino is equal - otherwise you have to fight with timeouts. That makes it harder using it as a new transport medium. Well lets see how this develops. For now i think they are just exploring if speeds faster than light are not yet only theoretical possible and with that are at the very first levels of development.