BLI finally answered a PRR steam question for N scale in their latest Flyer. Encouraging:
Q: "Any near future plans for bringing more PRR steam prototypes to N scale? I1s decapod is the top of my list, but H, J, and L classes would also be more than welcome." - Angela on Facebook
A: Besides the PRR T1 and M1a//M1b, we do have more Pennsy steam in the works for N scale. We can't share what just yet as we are still gathering data packages for the locomotives.