Apple Car concept from 2015, set in the grounds of the new Apple Campus.
Super-widescreen iMac concept from 2015. Note anglepoise arm harking back to the classic design of the first LCD iMac. Screen has much narrower bezels than current iMac.
Near-future MacBook Pro concept from 2015. New keyboard with larger keys and shorter travel (like the new MacBook's), enlarged trackpad, USB C, narrower bezels and larger screen (16inch rather than 15).
Retina MacBook Air concept from 2015 produced based on rumours during the run-up to the launch of the new MacBook.