This story covers several interesting topics. One is the item VanderL pointed out in the EU thread, about the extra powerful lightning. Another is the dust density found as Cassini passed through the ring system, and a third was the variation in the magnetic rotation period of Saturn [already previously discussed on the forum].
Concerning the variable magentic rotation period, I think that Cassini will find it is related to the latitude that the shadow of the rings crosses the face of the planet.
Forming opinions as we speak