Regarding DE, found this
http://www.adobeforums.com/webx/.3bc903fe
Ron,
Unfortunately I can't give you any satisfying answers. Bill's announcement meant what it said - at some point in the future there will be a Sony Reader released that will be able to display ePub files and PDFs that use Adobe DRM. This hasn't happened yet, although we are working on it. Sony has not publicly released any information (that I'm aware of) on their plans for this device and if there will be any backward support for older devices. When Sony does release that information, I'll post it here.
Jim Lester
Adobe Systems
I was all for the Cybook as I live in the UK and it is easier to get, but "if" the Sony 505 is going to support DE then I would probably get that myself (especially if it comes out in the UK).