This is from NASA:
After almost 20 years in space, NASA’s Cassini spacecraft begins the final chapter of its remarkable story of exploration: its Grand Finale.
Between April and September 2017, Cassini will undertake a daring set of orbits that is, in many ways, like a whole new mission. Following a final close flyby of Saturn’s moon Titan, Cassini will leap over the planet’s icy rings and begin a series of 22 weekly dives between the planet and the rings.
Here are some related resources (I’ll be adding this list to A Collection Of “The Best…” Lists On Space):
Here’s NASA’s primary site for Cassini.
Saturn spacecraft begins science swan-song is from Nature.
The Grand Finale Toolkit is from NASA.
Mapping Saturn’s Moons is from The New York Times.
Here’s another amazing interactive/video from The NY Times.