Here's crossing my fingers it makes it through the rings without hitting anything!
This is not new at all. Back in 25 years ago, when the Pioneer 11 flied by Saturn, we already measured the highly axisysmetric magnetic field of Saturn. The later flybys by Voyager 1 in 1980 and Voyager 2 in 1981 also confirmed this unique feature of Saturn's field.
This is of course of the interests of planetary dynamo scientists and make it extremely difficult to define Saturn's rotation period based on the non-axisysmetic field modulation.
The newly returned data from SOI shows almost the same field structure as we left 25 years ago. All internal field parameters remains the same ( the zonal coefficinets) and still very small non-axisysmetric field.
And there is actually a failure with the magnetic field measurements. There are two magnetometers onboard Cassini, Fluxgate (FGM) and Vector helium ( VHM), however due to some human being mistakes, the VHM was forgot to turn on during the most valuable SOI. So only FGM returned data.