A new post on the Chinese platform bilibili has given us some new screenshots as well as a video of the mobile Civ game, which is in development and might potentially only be available for the Chinese or a wider Asian market. The game was originally announced as “Civilization: Eras & Allies”, and is based on an already existing mobile game. The new screenshots and video strongly indicate that this mobile game will re-use lots of the content from Civ6.
Please have a look at this thread for more information.