Warner announced the release of the Japanese version Batman: Return to Arkham which going to release in this October in North America and Europe. To sad, but Japan going to gets the game only in 2017 on PlayStation 4 but with the same contents as the international version: remastered versions of Arkham Asylum and Arkham City with all the released DLCs.
It should be noted that the Xbox One version release NOT ANNOUNCED. The price of the game will be 5980 Yen + tax (package version) and 5480 Yen + tax (download version). With the announcement, the Japanese subtitled version trailer also released what you can watch above.