Teal Market Forecaster Richard Aboulafia writes a monthly letter on his website. In his latest letter he asks about the fate of the Fairchild Dornier 728Jet Prototype. Well, here it is: it is inside a hangar of the german aerospace research agency DLR in Goettingen.
Lately, I had the chance to see some specs - the OEW is lower than for the MRJ70 with more range. I guess if the 728Jet programme would not have collapsed and the family would have been extended with the 928Jet as planned there barely would have been a market for the Embraer EJet family left. But who will ever know...?
More information about the Fairchild Dornier 728/928 Jet programme can be found on Wikipedia.