The landspeeders seen in the city of Iziz are the same models as the one driven by Bail Organa in Star Wars: Episode III - Revenge of the Sith (2005).
The 'Jedi fortune cookie' message that opens the show reads "To seek something is to believe in its possibility."
The Aurebesh text visible on the view screen of the Partisan's goggles translates to 'night vision view'.
When Count Dooku uses the hologram to announce that he is sending over Kilani to get things in order on Onderon, it mirrors the scene from Star Wars: Episode 1 - The Phantom Menace, where Darth Sidious introduces Darth Maul and tells the Trade Federation that Maul will come over to assist them.