New Scientist is carrying this article summarizing the latest discoveries from the Saturn probe Cassini. The probe is observing much different weather conditions than those observed by the two Voyager probes. Then, the storms were weirdly regular, with the exact same number of lighting bolts every time they went around the planet (every 10 hours no less). Now, they're less regular, less strong (relatively), and seem to be traveling slightly slower. The current hypothesis is that the position of the planet's rings relative to the sun could be causing the difference, but only extended observations will be able to tell.