Originally the bout was announced to take place in Kobe on December 26th, boxing day to some of those around the world, however it now appears that the show has been cancelled all together. What is really unclear however is whether the bout has been rescheduled for 2016.
Whilst two of the schedules, which have been very accurate in the past, have unlisted the contest it's worth noting that Shinsei themselves still list the bout on their home page. That could however be a case of them not updating their site recently. It's also worth noting that no reason has been made public as to why the fight, or show in general, have been cancelled.