Based on official patch notes for recent Switch updates, you can expect the following:
: Adjustments to the maximum levels for heroes and equipment. GURDIANTALE-(USA)-NSwTcH-NSP-Update2520-Ziperto...
: Introduction of mythic or legendary grade heroes, such as Legendary Hero Erina (Grade 6 Myth) or Future Knight . Based on official patch notes for recent Switch
: Refinements to the UI, faster loading times, and bug fixes for seasonal events like Kama-ZONE or Guild Raids . updates - Guardian Tales for Nintendo Switch™ faster loading times