Quick answer
No Nintendo eShop demo has been announced for either Switch generation.
Evidence checked
- Switch and Switch 2 full versions are confirmed.
- Physical preorders are available for both.
- A preorder listing is not a free trial.
What this does—and does not—confirm
Demo availability, file size, regions and whether both systems would share a build remain unknown.
This answer covers Harvest Moon: Echoes of Teradea only. It does not copy schedules, gifts, values, controls or mechanics from earlier Harvest Moon games.
Evidence source
Official publisher announcement: Natsume preorder announcement — May 12, 2026. Independently summarized and checked on 2026-07-26.