An apparent prototype of the Essential Home smart speaker that was never officially released is now available via eBay. Essential Products closed in 2020 before it could launch the device. The gadget is running Android OS, though it is unclear if the prototype is capable of anything beyond booting up.
https://www.notebookcheck.net/eBay-user-claims-that-they-are-selling-an-unreleased-Essential-smart-home-hub.612887.0.html