If you have already purchased E6 Notes, it is not required to repurchase the entire E6.5 Notes. As you already know, E6 videos will remain unchanged. The goal of this updated edition is to bring in the most needed changes of the year, but at the same time retain the best of solid Marrow E6.
The notes of four clinical subjects (OBG, Medicine, Surgery, and Pediatrics) have been improved as per feedback, and these are available for purchase as a special bundle set of 5 Notes at https://www.marrow.com/notes.