Curriculum Changes from December to June

Hey guys,

I recently had to push back my test date for the Level 1 from December of this year to June of next year (military obligations)

I have all the Kaplan Schweser test material from 2014 (including the videos) and was wondering how much the curriculum usually changes from year to year. I really don't want to have to repurchase and another set of study materials. Can anyone who has taken Level 1 in December and June of the following year comment on this

Thanks, I really appreciate it.