These books are the Third edition (published 2016) . The only significant difference between the Third edition and current ‘Third Revised’ edition 2019, is the inclusion of the ‘Victoria College of a Music’ Graded Checklist which is irrelevant for AMRSM and Trinity students. Also there is a small adjustment to the layout (only) in the ‘Grouping of Rests’ pages. These 2016 editions contain all the same topics as the current 2019 edition (one other small difference is that on the ‘Contents pages’ the 2019 edition marks in Italics some topics which are optional in the current syllabus). Therefore this is a fantastic value package. We are selling these three books only together (All-In-One: 1-3, All-In-One: 4-5 and the corresponding Answer book) so you receive THREE books in total! A fantastic value package.