As of October 18th, 2014, the old solari board at New Haven Union Station has been replaced by a new LED display that shows not only train departures, but arrivals as well, just like in an airport. The solari board has been donated to the Danbury Railway Museum. However, the other stations I know of that still have working solari boards are Newark Penn Station, Secaucus Junction, and Trenton.
This photo was taken back in May, never knowing that this would be the last time I photographed the old board. R.I.P.