The carnival goes until July 31. I was there last night... It will probably come east just before or around the time the passenger excursion goes west.
Original NS plans called for 8 intermodal (6 stacks, 2 TOFC), 2 autoracks and a pair of junk freights for a total of 12 daily over the eastern TIer. 46G, 47G and 25K were the only regulars and an occasional 24Z before they decided it wasn't worth it to maintain two routes. 25K went first and the junk freights soon followed.
The Tier was supposed to be an overflow route to keep the Lehigh and Reading Lines fluid at the split. I don't get the feeling that their new plans were for that purpose. They seem to want to run container traffic to various points in the Northeast using the Tier because it is the quickest route out of NJ for this traffic. If they also plan to use it for overflow east west traffic, that would be a bonus.
I think it may be possible that NJ Transit might not be the perfect, infallible organization that most people assume it is.