do they change the smaller bits and pieces on the leatherman tools often?

i was checking out a site for one i want to get and then saw the official leatherman site has the 2004 wave thats got a bit on it i didnt see on the first tool.

http://www.all-leatherman-4-less.com/detail_leatherman_wave.html

http://www.leatherman.com/products/tools/Wave2004/default.asp

ive never owned a leatherman, so would it be better to buy the first listed (especially since its cheaper) or waiting for the 2004 model in the fall?