Hmmm - this might explain exactly why Amazon never wanted us to be able to change the screensaver on the Kindle - advertising space. It was all an evil plan from the beginning.
However, I'm not sure how much such advertising would impact me. Firstly, I sideload everything at the moment so I'm never connected to the internet. Secondly, I jailbroke my Kindle so that I could set my own screen savers.
Besides all that though, I'm not even sure if this version will be shipped to Australia anytime soon.
Regards
Caleb