So far, 16 exchanges have been registered including Bitflyer, Quoine, GMO Coin, Zaif, Bit Bank, SBI Virtual Currencies, and
Bit Arg Exchange.
Then in early December, 4 companies were additionally approved to operate cryptocurrency exchanges: Tokyo Bitcoin Exchange,
Bit Arg Exchange Tokyo, FTT Corporation, and Xtheta Corporation.
Not exact matches
But aside from that
bit of info, a few screenshots, and a strange
ARG, we don't know much about it just yet.