Boba Fett armor shows up worn by Cobb Vanth and a mysterious "nomad" (likely Boba Fett) appear in Chapter 9 (Season 2 Episode 1):

1. While the words "Boba Fett" are not spoken aloud in The Mandalorian Chapter 9 (S02E01), in the descriptive audio option on Disney+ for the blind it's spoken as follows during the bar scene: "The person wearing Boba Fett's armor brings the items to a table."

2. For the end scene, the descriptive audio has the following: "A cloaked figure with a pale, bald head comes into view, a Gaffi stick and Cycler rifle strapped across his back. He watches the distant rider head off into the sunset, then turns around to turn his dower, scarred face. As he strides forth, the picture cuts to black."