There are 2 important things to notice in this tab: The Background image, and the Version Checking.
First, let's look at the Background image. If you'd like to change the opening image from the Specify default to something of your own choosing, save an image to a folder of your choose and navigate to it using the 'browse' option. Once you've found the image you want, hit OK and that image will now be the new opening screen photo.
Second, look at the Version Checking. This is automatically checked and is the source of the confusing 'We're found an update do you want to update'