This update primarily focused on quality-of-life improvements and bug fixes rather than adding major content:
: Fixed issues where farm-specific wallpapers and floorings would not apply when starting a new game. Gameplay Fixes : Stardew Valley v1.5.6H3
: The game now remembers and restores to the last monitor used. causing it to reappear every night.
: Fixed a bug where pressing "ESC" to dismiss the level-up screen would close the menu without applying the level-up, causing it to reappear every night. Stardew Valley v1.5.6H3