december 2014 schweser material for june 2015 exam

I was suppose to sit for december 2014 exam but for some family issue i have to sit in june 2015 now. I have bought schweser premium package for december 2014, so can i use this edition for june 2015 exam or do i have to repurchase june 2015 edition.

Very little changed from 2014 to 2015. You can find some threads that detail the specific changes. Just study as you planned to and then refer to your 2015 CFAI books to fill in the new stuff.