The first of those is changing their view on retirement age. In the past the JBC enforced a general retirement on fighters older than 37, unless they were ranked by the JBC, OPBF or a world title body, or held a title. That however is now being changed with a transition beginning and a move towards more significant health checks allowing fighters to fight on longer. Whilst this brings the JBC more in line with other, international, bodies, it seems likely that part of the change is the continued success of Nao Ikeyama and Naoko Fujioka, who are both above the retirement age but still having notable success.
Whilst the age limit is being changed there is also a change to the age for pro-tests. At the moment the rule is set with a minimum age of 17 and a maximum age of 32, next year however it will be altered at both ends with a minimum limit of 16 and a maximum limit of 34 years.
Another change sees the JBC getting rid of the 3-knockdown rule, bringing the domestic fights more in line with the rules used internationally.