@Peter ***************
Visas and extension of stays are separate documents. It looks like the Ministry of Foreign Affairs is increasing the requirements for the Non-OA visas. A Non-OA visa is valid for one year. However, once a person acquires a Non-OA visa, they can get a one year extension of stay based on retirement. If a person has an existing extension of stay based on retirement, the last time the requirements for a one year extension of stay based on retirement were changed in 1998 (or thereabouts), people on existing extension of stays were grandfathered in.
Being grandfathered in means you submit documents to continue receiving the extension of stays. I expect any changes to one year extension of stays based on retirement to also be grandfathered in as well.