Evan Blass has posted an image of a new tablet with a punch-hole display and a constant, minimal bezel. As this device is shown with what appears to be an M-Pen, it may pertain to a high-end successor to the Huawei MediaPad M6. The leaker has compounded this idea by calling it a "MatePad Pro".
https://www.notebookcheck.net/Huawei-s-next-tablet-may-be-a-premium-device-with-a-punch-hole-camera.440653.0.html
400 grams would be awesome, M6 is not so old, but heavy compared to Samsung tablets.
Processor update would also help to fight against ipads.