Dave Filoni and Jon Favreau presented a panel for The Mandalorian, joined by Pedro Pascale (The Mandalorian), Gina Carano (Kara Dune) and Carl Weathers (Greef Karga).
Dave and co discussed the series in some detail, and showed a three minute behind the scenes video to the audience and the stream was blacked out to preserve the footage as a Celebration exclusive. The footage has leaked online but I have chosen not to share it, and to abide with the wishes of the creators.
One interesting detail Dave did share was that members of the 501st were brought in to play Stormtroopers, but were not told what they were doing it for until they were standing on set in their armour. That armour, their own personal sets, are now officially screen used.
Here are some images from the panel of The Mandalorian’s personal gunship, The Razorcrest, and the 501 Troopers.
The audience were given a poster as shown in the stream, which you can watch in full below.