I'm currently processing the MAG data from the Enceladus flyby that took place last night. At closest approach, Cassini was 50 kilometres from the surface of the moon. The narrow-angle camera will be able to see features at a resolution of down to 7 metres per pixel, which is going to be, in technical terms, absofreakinglutely spectacular. The spacecraft also flew directly through the southern polar plume of water vapour. The other imaging instruments will be able to do thorough scans of the compositional variations of the plume.
Watch the images from various instruments as they're uploaded throughout the day here!