820 also seams to make page faster it seams to me. (the demo at the salon du livre runed it). The reader acctualy felt like acting werid to me.
As far as Cybook, is concerned, it's a small company, not many resources, slow dev.
I took the oportunies i had to have the bookeen peaple in front of me to ask a few questions about this :
https://www.mobileread.com/forums/showthread.php?t=39273
I learned the update is comming next week (if everything goes well, i would add, and it rarelly does when dev is involved)
Additions involes pdf and Epub support (with drm) and folders (at last)