I am waiting for a few photos with your new Sony Alpha 7 IV. It will be interesting to see the improvement compared to your old Sony Alpha A7 III. Maybe you can even make a direct comparison, if you take photos with them at the same time at the same place from the same angle.
Have a nice day. Good luck and have fun with your new camera. All the best. Greetings and much love from Hungary.
I did include a couple of photos at the end of the post with the new camera and this post was witht he new camera
I think the main noticeable difference will be if you zoom in on a photo more detail with be clear on the new one due to having a Sensor with higher resolution