I would say you need to find a different "reliable source."
The F59PHI is no longer in production, as has been mentioned, and EMD wouldn't be able to bring it back because it wouldn't meet present-day crashworthiness standards. I guess they could build something similar but it would have to be an "F59PHI-2" and probably wouldn't look the same. But at this point they really have no incentive to build such a thing. MPI has become the dominant builder of passenger locomotives in North America, with customers including CalTrain, FrontRunner, GO Transit, Metra, Metrolink, and RailRunner.
Pan Am Railways — Boston & Maine/Maine Central — Delaware & Hudson
Central Maine & Quebec/Montreal, Maine & Atlantic/Bangor & Aroostook
Providence & Worcester — New England — GE Locomotives