From the Yamaha Canadian site:
https://www.yamaha-motor.ca/products/produc...=M|&LANG=en
Revised throttle pulley shape for improved drivability -- smoother throttle action and improved throttle feeling.
Middle gear damper spring load is increased for improved feeling at clutch engagement and better shifting feeling overall.
Revised 3rd and 4th pinion gears feature an additional engagement dog for improved shifting feeling.
Revised engine ECU settings for improved drivability.
All new ABS system for 2008. The ABS system now features a linear controlled 3 position system (was previously a 2 position system), an ECU integrated compact hydraulic unit, and a new active type wheel sensor with a new magnetic rotor. The benefit is a reduced weight and better lever feedback feeling when the system is operating.
The front and rear wheel rims have been revised to accommodate the new ABS wheel sensors.
For 2008 the windshield has been revised. A new hard coating helps to prevent scratching. The internal screen holder or base has been revised from a 2 piece to a 1 piece design to reduce weight. The external cover for the activation arms is changed to rubber to reduce noise. The internal mounting system has been revised to reduce the vibration of the windshield at speed.
The instrumentation meter cover has been revised from a silver finish to a black metallic finish to reduce glare on the windshield.
All new more comfortable hand grips.
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Additionally for the AE model:
Revised clutch boss shape and increased oil supply to the clutch for improved feeling at the engagement point.
Revised hand shift lever shape.
New lighter ECU module for the electric shift system.
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They'll keep on tinkering with the throttle pulley until they get it just right I guess. Same goes for the ECU fueling software.