Square Enix released the Kingdom Hearts III Re Mind DLC for the Xbox One earlier this week.
Also, there is a Re Mind + Concert Video package. That includes all Re Mind content as well as footage from the Kingdom Hearts Orchestra: World of Tres concert recorded in Osaka, Japan on November 30, 2019.
According to Square Enix:
In Re Mind, players who have completed Kingdom Hearts III can journey through a new playable episode with Sora as he experiences battles through his friends’ perspective and uncovers new truths along the way. Players can also take on multiple powerful boss battles, including 13 boss battles in the Limitcut episode and a boss battle in the Secret Episode, experience the new Data Greeting mode, and try the slideshow features and a new “Premium Menu” mode that includes diverse difficulty settings and gameplay challenges.