I have the 2010 lecture notes and I went though my roommates 2011 version and it didnt seem too different. They've decreased the material in the newer edition and added color images to the Micro and Path books. I didnt think it was worth it for me to spend the extra money and upgrade. Lecture notes arent meant to be super high yield (unlike FA, Golijan) and instead are meant to teach you the material in a very quick way or meant to review something that you cant recall at all. The notes are too detailed and extensive to serve as a high yield review tool especially when used with the videos although the instructors in the video do point out the high yield points for each section.