Cuphead's The Delicious Last Course was originally announced in 2018 with a release year of 2019. However, Studio MDHR has announced that it will now be releasing in 2020 for Nintendo Switch, PC, and Xbox One. This announcement included a 30-second teaser trailer showing off some new features including new bosses and Ms. Chalice who, unlike Cuphead and Mugman, has a double jump.
Cuphead DLC Delayed Till 2020 - GS News Update
Instead of 2019, Cuphead's The Delicious Last Course will be releasing in 2020 for Nintendo Switch, PC, and Xbox One