Target has finally given a release date for their Exclusive The Black Series The Mandalorian & Grogu (Maldo Kreis) Set which is October 2, 2022 (currently). This date is reflected on their product page as well.
If you are in need you can still place a preorder as of this post, but the price has increased from $36.99 to $38.99.
These should also be hitting your local Target stores very soon as well.
