Question about Huawei MediaPad M3

Unfortunately, I too have not received an update to Android 7 as of 21.07.2017.

Android 6 is currently still installed. There is no update yet, but there is already a beta. An update will probably come at some point.

My M3 has Android 6 and shows in the update manager: "Your device is up to date". Nevertheless, it's a great device!