At one point in Captain Hook cries out, "Flotsam and Jetsam!" when he couldn't open the door with Jake's sword. Those two names are a reference to Ursula's eels from the classic Walt Disney movie, The Little Mermaid.
The title is a play on words to the popular King Arthur tale and 1963 classic Walt Disney film, The Sword in the Stone.
Peter Pan is mentioned by Jake whiling learning of the origins of his Forever Sword.
The Forever Tree makes it first appearance in the series.
This is the first time Captain Hook is seen wielding a sword in the Jake and the Never Land Pirates series.