According to this official site, this is happening today (the date on this release was yesterday, so current):
Ex-USS John F. Kennedy to Commence Final Transit, Jan. 15
UPDATE: The move was scheduled to happen on Wednesday but has now been delayed until Thursday, officials told Action News.
AND: Navy officials originally planned for the ship to leave Philadelphia on Wednesday, but high winds in the region led to a one-day postponement. The trip to to Brownsville, Texas, is expected to take at least two weeks. Navy officials did not immediately provide a schedule for the ship's departure on Thursday.
I have a meeting west of Philly with three other people to deal with my mother's estate, which will keep me out of New Castle until at least noon tomorrow. Hopefully it will be a slow tow - I'll be very aggravated if I miss this
I'd appreciate any timing updates if anyone hears anything.