Spoiler: Rumor mill-- character to appear? The helmet of Sabine Wren spotted on set. Or at least a helmet similar to hers.
It's nice to see that the article actually made a point of emphasizing that don't we know this character is in the show, just the item related to them. So many times in situations like this you see articles declaring with complete certainty that the character is in the show even though there are tons of potential ways for the item to appear without the character.
Elon Musk tweeted this a few days ago And then Jon Favreau posted this today So I'm (and the StarWarsLeak subreddit) are guessing Musk's tweet was from the set of the Mandalorian. https://www.reddit.com/r/StarWarsLe...rmation_that_it_was_the_mandalorian_set_that/