2010, changes in Schweser

Studying with Schweser notes I received from a friend, copyrighted 2009 bottom of page, but refer to 2010 test before Level 1 refresher. Are there any significant changes from 2010/11 Schweser notes, important new material? Used '07 notes to pass level 1 in June '09 and only found a couple of minor updates along way. Can purchases updated version, but not sure it’s worth the $$. Thanks, John