You can see the quilt that are hanging now. They will be replaced by the 5 quilts that are hanging on the railing.
It's always fun to have a new view and it is good for the quilts to rest.
In many instances another reason to change them is to prevent fading.
When I built my studio I had lowE windows installed. I also has tubes to prevent fading put on the fluorescent lights. This has worked well in the 20 years I have worked here.