Just like Octopath Traveler, Square Enix is hosting user surveys for people who played through the Bravely Default II demo on Switch! Through these surveys, the developers take feedback and use it to improve the overall game. The survey is available here, be sure to fill it out with feedback and thoughts about the demo.
Lastly, Bravely Default II releases for Switch this year. Stay tuned at Final Weapon for the latest Japanese gaming news!