I didn't see this posted yet. From the Suzuki site.

Larger 37mm carburetor with throttle position sensor - ignition timing is determined by throttle opening for improved engine response, especially at high rpm
Revised cam profiles for improved overall power output
Increased number of clutch drive plates (8 to 9) for improved clutch operation and feel
New magnesium valve cover, clutch cover and ignition cover for improved engine appearance and reduced weight
Piggyback reservoir-style front shock absorbers featuring adjustable preload, compression & rebound damping for improved overall suspension performance
New aluminum front bumper and aluminum rear grab bar for improved appearance and reduced weight
Aluminum gear shift lever for lighter gearshift feel and reduced weight

Pretty cool.

 

plus the white 05z looks sick, that's a throwback to the late 80's suzuki quadrunners. Would be nice to have the new z with the piggybacks and extra features but still glad I have my 03.

later sparx

 

Exactly, there's some cool changes, but I have my Z now and don't have to wait. There's always something just a little better round the end.