The changes in the syllabus for September 2016 to June 2017 exam to the syllabus for the September 2017 to June 2018 exams, and to the syllabuses for the September 2018 to June 2019 exams, have all been very minor.
I no longer have the earlier syllabuses and I can’t now remember what the changes were.
Our free notes and lectures are up-to-date for the current syllabus.