Every exam has to be cleared for copyright. The Board can use passages from texts, artwork etc for exam purposes only. Before the exam is posted on the website (no longer under exam conditions) all copyright material must be released by the owner. Papers with no copyright (like Maths) will appear first, probably later this month. Exams with lots of copyright material (like English and Visual Arts) take longer to clear.
And some of them are posted with 'copyright pending' or 'awaiting copyright' so you can have the question but not the source or stimulus material on which the question is based.