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Using the multi-integral field spectrograph GIRAFFE at VLT, we have derivedthe K-band Tully-Fisher relation (TFR) at z~0.6 for a representative sample of65 galaxies with emission lines. We confirm that the scatter in the z~0.6 TFRis caused by galaxies with anomalous kinematics, and find a positive and strongcorrelation between the complexity of the kinematics and the scatter that theycontribute to the TFR. Considering only relaxed-rotating disks, the scatter,and possibly also the slope of the TFR, do not appear to evolve with z. Wedetect an evolution of the K-band TFR zero point between z~0.6 and z=0, which,if interpreted as an evolution of the K-band luminosity of rotating disks,would imply that a brightening of 0.66+/-0.14 mag occurs between z~0.6 and z=0.Any disagreement with the results of Flores et al. (2006) are attributed toboth an improvement of the local TFR and the more detailed accurate measurementof the rotation velocities in the distant sample. Most of the uncertainty canbe explained by the relatively coarse spatial-resolution of the kinematicaldata. Because most rotating disks at z~0.6 are unlikely to experience furthermerging events, one may assume that their rotational velocity does not evolvedramatically. If true, our result implies that rotating disks observed at z~0.6are rapidly transforming their gas into stars, to be able to double theirstellar masses and be observed on the TFR at z=0. The rotating disks observedare indeed emission-line galaxies that are either starbursts or LIRGs, whichimplies that they are forming stars at a high rate. Thus, a significantfraction of the rotating disks are forming the bulk of their stars within 6 to8 Gyr, in good agreement with former studies of the evolution of the M-Zrelation.

IMAGES-III: The evolution of the Near-Infrared Tully-Fisher relation over the last 6 Gyr