Firmament's Estimated Delivery (Release) Date was July 2020.
That date was an Estimate, and has since changed, as noted in Firmament Kickstarter Updates #21 and #23.
No new Release Date has been announced or confirmed at this time.
When a new Release Date for Firmament is known, it will be crowed from the rooftops! It'll also be in the Updates linked above, on Cyan social media channels, and pronounced far and wide in our Cyan Insider newsletter.