FAQ: Why don't you just release all papers now instead of right near the exams?

Answer: I write paper 2 based on the topics that did not appear in paper 1 and then paper 3 based on topics that did not appear on papers 1/2. This gives a much better prediction and so it is much better to wait. Some other paper makers do release all three (and then charge money...),  which leads to their second and third papers being on the wrong topics. Writing them early is just pure guesswork (and lazy).