While other companies were unveiling their new phones, Xiaomi tried to keep your interest by teasing the Mi Mix 3 its full-screen slider-based design and its 5G support and then things got quiet. There was some evidence that the new flagship might be unveiled on September 15, but that obviously didnt happen, so now we have a new date October 15.
The date comes from the image on the left and has not been officially confirmed. It also mentions the Nanjing Youth Olympics, presumably the event will be held in one of the venues used back in 2014.
Theres also the image on the right, which just touts the full-screen design (which we knew already).
Anyway, while the official info has stopped coming, the rumor mill has kept a trickle of info coming our way. The most recent rumor is about a dedicated button for the Xiao AI assistant.