One possibility is the Mi Max 3
Xiaomi recently shared a teaser video for a June 28 release. The video teases a rather huge sky-blue Mi box inside a Xiaomi store.
Xiaomi recently unveiled the Redmi 6 Pro and Mi Pad 4 yesterday, so it might be a special edition color of a current device. However, judging by the size of the box in the teaser video, another possibility would be the Mi Max 3.
Recently, a now-taken-down listing of the Mi Max 3 Pro was spotted in Xiaomi’s website. Key features include a 6.9-inch display, 5400mAh battery, Snapdragon 710 processor, IMX 363 primary rear camera, 6GB RAM, and 128GB internal storage. 
We’ll keep our fingers crossed for the meantime until Xiaomi makes the official announcement, so stay tuned.
