When the 2.7 update launches for Genshin Impact, the Yelan banner and Xiao rerun banner will appear.
The 2.7 Genshin Impact Special Program came and went it, and with it was a confirmation that a Yelan banner and Itto and Xiao rerun banners will appear for the game.
After which, the Yelan banner and Xiao rerun banner will immediately appear.
The Itto rerun banner with Shinobu will appear after that.