Further update: lawyers are now saying:
(1) Applicants must appear in Turkey in person for fingerprinting both at the time of residency application AND again at time of citizenship application.
(2) Dependents must also appear in person for fingerprinting both at the time of residency application AND again at time of citizenship application, though the in-person appearance of dependence need not be at the same time as the principal applicant, and can be done after the principal applicant’s application has already been processed and approved (as the right to add dependents is already vested).
All these newly added hurdles may indicate negative attitudes toward the CBI program in the political sphere with the program on the path to eventual abolishment or unaffordability. If you are seriously considering this program, would advise proceeding ASAP.