Discontinuation of Keycloak's Map Store Announcement

Do I understand right from this recent announcement Announcement: Discontinuation of Keycloak's Map Store - Keycloak that plans to make PostgreSQL as a first class db will be postponed. Keycloak will support MySQL/MariaDb for a longer time? But service non-interruptible upgrade will also
be postponed?

As far as I read it right, the revoked plans for the “map storage” was, because it will only runs under PGSQL and CockroachDB. I can read nothing about changing the supported data bases.