The 570 OCR Multiple choice questions were published last month in line with the original spec and the exam board have just released a new, much more simplified specification. This is the link explaining the changes: https://ocr.org.uk/administration/support-and-tools/siu/as-a-level-economics-536672/ and this one: https://ocr.org.uk/Images/536595-as-and-a-level-economics-faqs.pdf
And this is the link to the new spec: https://ocr.org.uk/Images/536455-specification-accredited-a-level-gce-economics-h460.pdf