It also features Anzellans like Babu Frik. Anzellan mechanics appeared in season 3 as well. Many clips are on an icy planet like Hoth, including a sequence of Mando and Grogu piloting an AT-ST.
Some footage from the movie was screened at D23 this year, which showed Grogu as Mando's bounty hunter apprentice, some Anzellans (AKA Babu Frik's species), the return of the Razor Crest ...