Upgrade to newer Ghost versions mainting previous interface?

Hi all,

Currenlty using Ghost 4.4.0. I have two questions:

  1. Can I upgrade to a newer Ghost version maining the post editor interface shown below (with the feature image in the post settings)? Is there a newer version that maintains this format?
  2. Is there an option to remove the Post Access dropdown highlighted in the image below? Or do I need to do anything in Ghost Source and update the one I have in production to make that change?

Thanks in advance!