I've seen in some screenshots that the bars look different, were they just trying different ones out before the game came out or can you change it? Just to be clear I know you can move the stuff around .
Menu -> Customize -> Edit Interface (while in-game)
You can move where things are places, re-size them & re-shape them. What you've seen is people who have done that.. I know I've customized my UI to be more friendly to the way I think/play/see .. helps a lot.