A new listing for "Mi True Wireless Earphones 2S" has appeared on the Wireless Power Consortium (WPC) website. Based on this name, it seems that Xiaomi has a new TWS product on the way. However, the image that goes with their new apparent certification looks like one that is already on the market.
https://www.notebookcheck.net/New-TWS-earbuds-from-Xiaomi-may-be-on-the-way.455464.0.html