The Mi 7 will be Xiaomi's next device in its premium Mi product line. A teardown of what appears to be the device's firmware has revealed some more information about it. Files on the firmware point towards the presence of features like an OLED display, EIS, a 3170 mAh battery, and NFC support.
https://www.notebookcheck.net/Firmware-files-of-the-Mi-7-throw-some-more-light-on-what-we-should-expect-from-the-Xiaomi-flagship.284924.0.html