Hi there! I actually have some similar questions. There seems to be a dearth of information about the existence of a custom screensaver/wallpaper hack for the Kindle Paperwhite. I'm assuming that this means there is not a screensaver/wallpaper hack available for the PW right now, but, just so there is a definite answer from those "in the know:"
Could someone either confirm or deny the existence of a Paperwhite custom screensaver/wallpaper hack?
Also, if it does not exist yet, is anyone working on it? (Not trying to be pushy, just curious)