This will help me find the exact patch notes or description for you.
If you are looking for the update text (changelog) for a version 0.16 release of an indie game, it usually includes:
: Engine optimizations for smoother gameplay on PC. UI/UX : Refinements to menus or control schemes.
: Addressing crashes or UI glitches found in v0.15. Content Updates : New items, enemies, or level variations.