They're not gone, you just have to buy them from farm stands in New Jersey. Only when they're in season, of course.
Eh, I don’t live in NJ so I don’t know if they are available roadside, but I thought they were gone...
Rugters has come out with similar varieties due to the demand by area farmers to bring back the flavor...I actually ordered a bunch of seed for this season...Hope I am swimming in wonderful Jersey Beefsteak-like tomatoes :)
http://njfarmfresh.rutgers.edu/rutgers-njaes-tomato-seeds-order-form.pdf