There were late 2019 model Staccato P’s that came with the Gen 2 grips. But, they do not make the 4.15” barrel Staccato P any longer.
Differences between the two I have noted:
-4.15” barrel for 2019 vs. 4.4” for 2020
-DLC Coated barrel in 2019 vs. Stainless in 2020
-Longer, swept up beavertail on 2019 vs. shorter, straighter beavertail on 2020
-Full length frame rail with multiple pic slots on 2019 vs. Shorter rail with single slot on 2020
-Different shaped hammer spur
-One less serration on the front and rear of the slide on the 2020 model
-Gen 1 stippled grip on 2019 vs molded Gen 2 star logo grip on 2020
-On the Duo models, the late 2019 and all 2020 models got a thinner RMR plate
-I don’t think the 2020 models are shipping with a magwell
Probably more differences but these are what I can think of right now.