To find the specific update you're looking for:

For users seeking an NSP update (in the context of digital distribution), ensuring you have patched to v1.4.4.9 is non-negotiable. Earlier builds lack the “extra quality” polish.

: Nintendo Switch versions of games, including Terraria, are optimized for the console. Updates for the Switch version of Terraria would typically aim at ensuring stability, compatibility, and the best performance on the Switch hardware. These updates might also include optimizations for the Switch's portability and TV modes.