The first of the Rhea images taken before yesterday's Enceladus flyby are starting to show up. Above is an example of one of the early images showing the full disk of Rhea. At its peak, images with resolutions up to 1 km/pixel should show up. The region seen here is the southern leading and anti-Saturnian hemisphere. South is to the right. More images to come.
UPDATE: most of the Rhea images downlinked this morning are now down, suggesting a 8 hour lag between when the images are downlinked and when they are posted on the JPL raw images page. The available images show a largely cratered landscape with several large impacts, one with a nice central peak.