Before the 1.4.4.9 hotfix, the base 1.4.4 update introduced sweeping changes that redefined the late game. If you are just installing this update on GOG, here are the headline features you missed:

Terraria version 1.4.4.9, released on November 17, 2022, is a minor update focusing on balance adjustments, including changes to Scarecrow bestiary requirements, Morning Star damage, and Xeno Staff fire rate

One of the main reasons players choose GOG is the ability to own the game DRM-free and install it manually. To get the 1.4.4.9 update offline:

: This patch primarily focused on final balancing for the Labor of Love update and fixing critical launch or crash issues.

While Re-Logic’s official patch notes focus on Steam, the GOG 1449 build includes these specific benefits:

Update 1.4.4.9 is the final polishing point of the massive "Labor of Love" update (version 1.4.4). Re-Logic has stated that this patch focuses heavily on balance changes, bug fixes, and quality-of-life improvements based on years of community feedback.