Please tell me I'm not the only one who's noticed, It's driving me absolutely crazy!

In short scroll up and look at the top left/right corners. You will see an image that shows...
turtle people? (they have shells) admiring a storm. I think some of them have tales (see what I did there?) and I can't help but to wonder if they will be a new race added into ToME.

Or maybe (most likely) a random fantasy image on a website that I'm looking way to far into xD