Recently the NHK News on-line reported the following:
The foundation was laid to give consideration for female imperial Family members to remain a member of the Imperial Household in the capacity of "Joseimiyaka" even after she get married; it turned out that a study meeting held by the people concerned was newly prepared, and examination had begun on the range of the target female Imperial Family that would include such as the Crown Prince and Princess' eldest daughter, Aiko etc., and inner Imperial prince of the child and grandchild of the Emperor.
In October this year when the Imperial Household Agency Director Haketa met with Prime Minister Noda, he indicated that the system in which the female Imperial Family member leaving the Imperial Household after marriage had been a subject, and the urgency was high in order to maintain the Imperial Household's activity. In response, the government showed the plan which had put in as a base for consideration the idea of "Joseimiyaka" in which a female imperial family member could remain as the Imperial Household member, even after that female get married. Meanwhile, it turned out that last month a study meeting was newly prepared in which Imperial Household Agency staffs etc. had participated, and the examination has begun, the range of the target on female Imperial Family member had been on the Crown Prince and Princess' eldest daughter, Aiko etc., and the inner Imperial princes of the child or grandchild of the Emperor. About the conditions to become the inner Imperial prince, it was expected that consideration had to be taken into account on the number of the Imperial Families needed in the future, the national burden accompanying it, and how female family members etc would relate to the system of His Majesty the Emperor. When the Imperial House Act was to be revised based on this view, the three Imperial female members who would stay even after marriage would be the Crown Prince and Princess' eldest daughter Aiko, Prince and Princess Akishino's eldest daughter Masako, and the second daughter Yoshiko.
It is quite a new idea for the Japanese imperial family to consider such a change.