They look to be more or less fun videos to give a bit of the background than actual details, so don't expect them to be spoilerific at all. The animation is nice and it is all narrated by Hit Girl (Chloë Grace Moretz) to boot. If you want more to get you excited for Dishonored then here you go.
Take a watch and let us know your thoughts.
The Awakening
The Hand That Feeds
In the Mind of Madness