More late-game content
New farm buildings
New crops
New artisan goods
New advanced farming/producing mechanics
Shane and Emily will be marriage candidates. They will also have more events and dialogue as a result.
More marriage content for all spouses
More events for the non-marriage NPC’s
Improvements/Additions to mining and combat
Ability to move buildings and other convenience features
More bug fixes
More secrets
More small, fun touches to the world