01 / Keep the save
Do not restart just for 1.0
The official FAQ says all saves carry over and can experience the new content regardless of current progress. It also says achievements are retroactive for work already completed. A restart is therefore a preference, not an update requirement.
02 / First return route
Check the systems whose ceilings moved
- Villager relationships: heart caps rise to 10, with proposal and wedding events for romanceable characters.
- Town and Renown: the Renown cap rises to 100 and the Town Repair storyline becomes completable.
- Mines and dungeons: additional quests and rewards enter the pool.
- Request Board and Museum: both receive additional content and rewards.
- Saturday Market: Stillwell and Zorel join the market roster.
03 / Relationship state
Marriage changes other romances
If you were dating multiple characters before marriage, the other relationships switch to best-friend status after you marry. Having a child remains optional; the official FAQ says the player controls that choice.
04 / Localization warning
Beta languages can fall back to English
Simplified Chinese, Traditional Chinese, French, Japanese, Korean, Russian, and Spanish launched as beta localizations. The FAQ estimated roughly 75% coverage at launch and says missing translated text, especially late-game text, may temporarily appear in English.