It looks like we'll be getting some of the items soon. Information taken via this article here.

Thanks to reddit, I came across this fan translation of a question here.

Quote Originally Posted by Reddit

Q: Chinese version items such as the panda minion have become optional items in the Japanese version. Are there any plans to sell other stuff in Japan, such as Chinese dresses?

Yoshida: We do have plans. The data for the items is currently being added on the Japanese side of things, so we'll be able to formally announce it in the near future.
Hopefully, if we're selling in them in the JP store, we'll be seeing them here soon.