On Monday, NJT added another Bombardier-built multilevel 6 car trainset to the Northeast Corridor Line. They also plan to add a third trainset in September.
At this time, you can find the original 11 car trainset, as well as the new 6 car trainset, on these specific train runs:
TO NEW YORK
Train 3914
Depart Trenton 6:03 a.m.
Arrive New York 7:11 a.m.
Train 3924
Depart Trenton 7:10 a.m.
Arrive New York 8:20 a.m.
Train 3952
Depart Trenton 2:17 p.m.
Arrive New York 3:31 p.m.
TO TRENTON
Train 3835
Depart New York 10:28 a.m.
Arrive Trenton 11:59 a.m.
Train 3965
Depart New York 5:16 p.m.
Arrive Trenton 6:24 p.m.
Train 3967
Depart New York 5:30 p.m.
Arrive Trenton 6:36 p.m.
More information can be found here: http://www.njtransit.com/tm/tm_servlet.srv?hdnPageAction=PressReleaseTo&PRESS_RELEASE_ID=2345