This episode was dedicated to Ian Abercrombie, who formerly voiced Palpatine/Darth Sidious. He died on January 11, 2012, a year before this episode aired.
First appearance of Anakin's freighter, the Twilight, since season two's Children of the Force. Since then it seems to have fallen into a state of disrepair.
Another four part arc featuring Darth Maul was written for the following season, but never completed when the Clone Wars was canceled. It was adapted into a four part comic book series by Dark Horse titled 'Darth Maul: Son of Dathomir'.
When Obi Wan arrives on Mandalore, he is wearing the same armor he wore when he was disguised as Rako Hardeen in Season Four's "Deception" Arc.
When Obi-Wan arrives on Mandalore, he uses much the same tactic that Luke and Han Solo used to get their disguises in Star Wars.