Over the last 12 years Cassini has taken many amazing images of Saturn's rings and atmosphere.
Unfortunately all good things must come to an end and Cassini is nearing that end. Starting in late 2016 Cassini began its last mission, a multiple path trek (22 times) through Saturn's rings, hopefully giving us our best look ever at Saturn's outer rings. Following this (September 2017) Cassini will plummet into the atmosphere of Saturn until the craft is destroyed, collecting and sending back atmospheric data as long as it can.
It's sad to see the mission end, but the data Cassini has provided over the years is simply amazing! Even in its final hours Cassini will continue to transmit back data until the very last second.