backpack

ok ladies. i heard through a friend who works at chanel that a new backpack will be coming out for early fall. now..i love functional but stylish handbags and im embarassed to say this but i really want a back pack. do you think they are still "in style"? i know you cant go wrong with chanel but still... a back pack is a back pack. the last back pack i owned was a prada one. and if i do get one, what do you wear it with? casual clothes?