Cuphead update 1.05 was released today for PS4, PS5, Xbox One, Xbox Series, PC, and Nintendo Switch. You can get the patch notes here.
This patch has addressed some of the issues that have been reported since the launch of the Delicious Last Course DLC. The patch also changes the title screen allowing the player to switch between the original one and the new DLC one. In addition to this, the PS4 lightbar has also been featured with an update that allows the color of the lightbar to change to yellow if the player controls Ms. Chalice.