This from the St Albans and Harpenden Review:
Roger Perkins for First Capital Connect said: "The passenger information screen is just a mock-up of the real thing and its manufacturers were unable to correct the typo in time for the grand unveiling."
That bodes well.
UPDATE: This from the Flan...
But they seem to have got away with the bigger faux pas in that there is no station called Luton Airport.