is one piece episode 568 filler?

After the Sea Kings stop Noah, it is revealed by them that Shirahoshi is actually their queen ever since she was born. At the same time, the royal guards report the current situation to the Minister of the Left, and Neptune states that the power to destroy the world has finally awakened.

The three princes get ready to capture Hody Jones and Vander Decken IX. While the sea kings are taking the Noah away from Fish-Man Island, they talk about how Luffy could hear their voices, comparing him to the late Pirate King, Gol D.

Roger.