Among the planned service enhancements are after-midnight regional rail service on Fridays and Saturdays on the R5 Paoli/Thorndale, R6 Norristown and R7 Trenton lines, which would run an hour to two hours later than current weekend service.
Additional late night service probably doesn't bring in much revenue for transit authorities so I understand why they're pretty resistant to such things, but from a broader perspective it's good policy. It'll help reduce the number of cars in center city, help cut down a bit on drunk driving, allow younger people without cars or those too inexperienced to drive to the city to attend all ages shows in town and still be able get back home (or close enough to home that mom&dad will pick them up), etc..