In a monumental post-Thanksgiving episode, The Mandalorian revealed some key information about The Child long-wondered by fans. https://t.co/inTL8a97YY— Entertainment Weekly (@EW) November 27, 2020
He lived on Coruscant, trained by Jedi Masters, then was hidden away from the Empire.
Ahsoka Tahno refuses to train him because she senses dark in him and sees his attachment to Mando. Which, duh. Tells Mando to take him to the planet Tython where there's a Jedi Temple. He needs to place Grogu on a seeing stone on top of the mountain and "there's a chance a Jedi might come searching for him," while noting there are not many left.
Also a Thrawn shout out and I am living my best nerd life right now.
Michael Biehn was also there.