Miro,
I think that you should be fine from a maintenance task performance perspective. The changes from '07 to '08 are most likely very few if at all. The differences from a model older than '07 should be indicated in the manual. The book you purchased should be fine for any maintenance / repair activity in which you engage.
There is a bigger variance in the parts manual. Most obvious is the part numbers change based on paint codes. But there are other challenges when ordering parts.
_________________
Dale
Huntsville, AL
2 x 2005 - Hers & His
Boots, socks, underwear, pants, t-shirt, jacket, gloves, & helmet.
http://www.youtube.com/user/jdeereanton
Riding on "Just Basic Shocks" - My shocks, while completely functional, have never even been nominated for an award.