As previously stated, Cybook development is currently stalled because of a lack of Cybook-owning contributors. So, think of it like a download: if the rate is 0, the ETA is infinity
(though that doesn't mean it will never be done, of course!)
DDHarriman, I see that you also have a Sony PRS-505. The port for the Sony is advancing steadily (can be monitored at
http://openinkpot.org/wiki/PRS505DetailStatus, though I don't know how often it's updated).