The Questions and Answers are designed to match the current CAA question bank. Until that catches up with the changes other bits of the Belgrano tower are implementing, there isn't any future in changing the information.
You need (for other good reasons) to be familiar with ATSOCAS, but that won't help you pass the PPL/NPPL ground exams.
Any pilot shop will have Pooley's Confuser or the Jeremy Pratt series Questions and Answers.