Hasbro website has been updated with character art
which we see on toy packages. It is possible that these are the backgrounds for characters' profile pages which will contain basic info about them.
Check out the incredible artwork for Optimus Prime, Bumblebee, Hound, Crosshairs, Drift, Grimlock, Strafe, Slug, Slash, Scorn, Galvatron, Stinger
after the jump in high resolution.
And be sure to check TFW for more info.