Bloodstained: Ritual of the Night will be receiving new modes in the future. The developers are working on not just Zangetsu mode, but two other new modes as well including Boss Revenge. They have more planned including additional modes and an additional playable character. 505 Games and ArtPlay further stated that say they intend to “have a regular cadence of content once all the platforms are on the same level of content” with more news to be shared in 2020.
On the subject of platforms, Switch owners will get a new patch soon as version 1.04 is planned for January, and will include all improvements from version 1.03.