To clear up the questions, Slash uses Power Plus EX. It is solid (non-pearlized). Sanded dark blue with Yellow and Red logos. Yes, Triton Elite fans will be very happy!
Xception is indeed pearlized, but another Goo coverstock, Goo LS (long/strong). It goes further than Goo, not as far as Power Plus. It is whippier than Goo, not as whippy as Power Plus. Del and the R&D team outdid themselves again! Very strong change of direction but not spooky in the midlane like most pearlized, angular balls.
Sorry, but I can't leak the info on the GP2 and Arsenal balls. But both lines have coverstocks that are different from each other and different than any previous Track bowling balls.