Mi Mix 2s at the back, as you can see below, but much smaller, which would be welcome news in this day and age of 6-inchers everywhere. The finger scanner is placed on the back, so you don't have to stretch down all the way each time you want to look something up when holding the phone with one hand, so that's one more plus for the Mi 7's ergonomics.
The handset looks pretty in its beige glass (or maybe ceramic, like on the Mix 2s) body, and the dual vertical camera is likely the Mi Mix 2s kit, with optical zoom, and other shenanigans. The settings shot shows a version with 6GB RAM/128 GB storage, but there are rumors for an 8GB/256GB version as well. All be revealed just two weeks from now, on May 23, so stay tuned.