The Mandalorian recently wrapped up its first season, but Mandalorian showrunner and executive producer Jon Favreau confirmed that The Mandalorian season 2 will arrive in fall 2020.
Favreau tweeted out the Fall 2020 release window today, the same day The Mandalorian season 1 finale aired on Disney+. He also tweeted a photo of a Gamorrean, suggesting at the very least that they might appear in season 2.
Season 2 of #TheMandalorian coming Fall 2020 pic.twitter.com/8VQYLDMQ0V
— Jon Favreau (@Jon_Favreau) December 27, 2019
Source: IGN.com The Mandalorian Season 2 Premieres Fall 2020