When does Gilligan's Island return?

The series follows the adventures of seven castaways as they try to survive on an island where they are shipwrecked. The show's ensemble cast features Bob Denver, Alan Hale Jr., Jim Backus, Natalie Schafer, Tina Louise, Russell Johnson, and Dawn Wells. Gilligan's Island received solid ratings during its original run, then grew in popularity during decades of syndication.
The two-man crew of the charter boat SS Minnow and five passengers on a "three-hour tour" from Honolulu run into a storm and are shipwrecked on an uncharted island somewhere in the Pacific Ocean. The exact location is said to be in conflicting longitudes/latitudes in three episodes.