switch version most likely got cancelled. havent heard anything about it since the announcement. i will just buy the ps4 version then.
Switch version is just confirmed for West also:
As for the Switch version, things are slightly less clear. "We are also developing the Switch version for Europe and North America," reads Square Enix's statement, "but development is expected to take a long time from a technological standpoint as well, so we still have a long way to go until its release".
At a Dragon Quest event, a Square Enix PR representative told IGN that the Switch version would definitely not be released in 2018, and could end up being released "much later".