https://www.gematsu.com/2021/09/nintendos-japanese-release-schedule-lists-kirby-discovery-for-switch-bayonetta-3-for-release-in-2022
Sep 23, 2021 - The release schedule on Nintendo’s Japanese website has been updated with the release of an unannounced Kirby game titled Kirby: Discovery for Switch.
release schedulekirby discoverynintendojapaneselists