I thought it would be interesting to amass a list of the games released/planned for the PSP and DS, post 3DS and Vita. In the past I've seen Nintendo quickly phase out their old systems (N64, GC) and at times choose to slowly transition to new hardware (GBA to DS). On the other hand, Sony is infamous for supporting their dated systems for lengthy periods--though this is the first instance where they'll be moving on to a new handheld.

I'll update this post once I've compiled a thorough list of games.