When the Castlevania Anniversary Collection was released last month, Konami promised it would add the Japanese title variants as a free post-release update. They've made good on that promise and have now released Japanese versions of "numerous titles" for not only that collection, but also the Contra Anniversary Collection and the Arcade Classics Anniversary Collection too. Reddit user u/PageAndScreen provided a more detailed list of the games that have received updates in the Castlevania Collection:
The same update also included the ability to remap buttons in both the Castlevania Anniversary Collection and Contra Anniversary Collection. The updates are available in all three collections now.
Get the biggest Xbox news delivered straight to your inbox every week.