I think we will have to wait for the first phones to arrive and it may also receive improvements later... but for deeper conclusion, I would like to see more photos in more different environments - in a darker room for example.

One thing is the image processing and another one is the noise of the sensor itself which is not only depends on the sensor by its own but the internal electronics. For example a stable, appropriately filtered power supply is also a key value.

Maybe that is one of the reasons why there are many phones with the blur then sharpen it way of image post-processing.
In this relation, I think Pro1 may be among the higher image-quality phones.

So, these photos are not perfect, but I think what we can see is not bad at all.