Are you sure it went up for exams on the old syllabus? I just cross checked my exam booking for POF (H) which is next month and I'm on the old syllabus, and the duration is 1 hour, whereas in the annex I attached above it's been changed to 1:15. So if that duration change hasn't happened for my aforementioned exam, perhaps the question distribution changes aren't applicable to exams on the old syllabus?