Concrete details at the moment are scarce but it seems like the two men will be facing off in August, in Japan, with a lot of noise suggesting the bout has got a concrete data and venue.
Although not yet confirmed the strong suggestion is that Japanese promoter Watanabe will be using their option on Corrales to bring him back over for their August 31st card at the Ota Ward Gymnasium. That card is already confirmed to feature WBA Super Flyweight champion Kohei Kono (32-8-1, 13) [河野 公平] and WBA Light Flyweight champion Ryoichi Taguchi (24-2-1, 11) [田口良一].
Although the bout would mean that Watanabe couldn't enforce a rematch between Corrales and Uchiyama, though of course money talks if they do wish to pursue that bout, it would allow Watanabe to post a triple title show at the end of August and potentially add a big draw match up.
If Nakamura was to upset Corrales it would open up doors for him to get a long awaited showdown with Uchiyama, a bout that Nakamura had called for numerous times in recent years, whilst a win for Corrales would likely strengthen his position for further fights in Japan, where the 130lb division is red hot.