Yes, there’s a big difference between developers and designers but I’ve always thought it critical that each understands the others trade to some degree. After all, we work together in order to ship our products.
I know it isn’t officially code, but I get a kick out of watching developers and designers discuss why certain decisions were made with respect to their projects.
Love this kind of stuff. I especially dig what their doing with the App Tabs (kind of like Chrome’s application shortcuts).