2007 or 2008 Schweser Books

Im using my friends hand-me-down books schweser 2007 for the 2008 exam. Is there a big difference in the new editions from the old? My viewpoint is that what can possibly change year to year? or am i wrong

I know there has been huge number of additions as far as LOSs are concerned. There has been a fair amount of addition and changes in 2008. Also a few parts of the material has changed from last year. Personally, I would never recommend preparing using the last year’s notes…