I just discovered some secret images on the official website. I do not know how old/new these are but it seems that the background will change every 1-2 minutes to show 1 of 3 images in a negative/inverted look.
I have taken screen shots of all 3 images to share, they are posted in order which I first saw them in.
This one seems to be several cloning capsules or maybe bacta tanks.
Concept art of the cloning facility?
When Starkiller first wakes up?