Firmament’s Physical Backers Rewards will ship from Fangamer in 2023, after they’ve sent you your key to the digital version of the game. There was a note about this in our May 2022 Kickstarter Update (#44). We will provide additional info about when physical rewards will ship in a future Kickstarter Update.
Fangamer has all the details about their shipping process over on their website’s Support Page, here: https://www.fangamer.com/pages/help