News-Journal, Wilmington, DE, 6/22/15:
MARC trains could come to Delaware
Delaware and Maryland transit officials are discussing the possibility of extending MARC, Maryland’s commuter rail line – which now runs from Washington D.C. to Perryville, Maryland – as far north as Wilmington.
Here is the story.
It has been discussed before, but hopefully this will be around the corner in a few years. It is interesting that they consider extending MARC to Wilmington, which is beyond Newark. Thus between Newark and Wilmington the MARC and SEPTA systems would overlap. I'm a fan of one-seat rides, but could things end up whereby all SEPTA trains go no further than Wilmington, with timed transfers there to MARC to go to Newark, all Maryland points, and Washington, DC (a "Wilmington Shuffle") ??
The article states that the Newark, DE station will be rebuilt to accommodate more capacity. One must also wonder if this will mean more Amtrak trains will stop there, as right now there are only very few Amtrak trains stopping there each day.
And one inaccuracy:
The only section of the Northeast rail corridor without commuter rail service is the segment from Perryville to Newark.
The last time I checked, there was also a segment without commuter rail service between New London, CT and Wickford Junction, RI.