Genshin Impact developer miHoYo rarely ever leaves things up to chance, and the new artwork shared on November 1 featuring Ningguang and Beidou, Liyue characters, should be teasing future developments and Skins considering the current leaks.
First, if you read the tweet, it says that the artwork was shared to celebrate how the Genshin Impact Japanese Twitter account reached 1.6 million followers.
Genshin Impact – More Liyue Events coming soon?
Past leaks have said a Ningguang Skin is coming, and it looks like this is what this new artwork could be teasing.