I know the change had been announced but here it is in black and white in the 2022 Summary book.
ICE FISHING EQUIPMENT. It is unlawful while ice fishing to use more than five fishing devices, which may
consist of rods, hand lines, tip-ups, or any combination. Each device shall contain a single fishing line with no restriction on the number of hooks used for fishing, except when fishing in the Pymatuning Reservoir where no more than three hooks shall be attached to each line.
Self-hooking devices such as jaw jackers and automated fisherman are allowed. Holes cut in ice may not exceed 10 inches between the farthest points as measured in any direction. All lines, rods, or tip-ups shall be under the immediate control of the person using them. On Pennsylvania Fish and Boat Commission lakes, shelters or shanties must be removed when through fishing for the day.
Here is the link ...
https://www.fishandboat.com/Fish/FishingRegulations/Documents/2022summarybook.pdf