Hmmm. A Reader with WiFi isn't something I'm going to wet myself over
. This "content sharing" thing (like Microsoft's "Zune" player) seems like little more than a "fad" to me, and I don't personally have a problem with plugging a cable in to the Reader to upload content to it.
I could be wrong, though. Let's wait and see. Personally, though, I'd rather see a new model with a touch screen, decent search facilities, annotation, etc, than WiFi.
Excellent news, though, that sales are going so well. Let's hope the anticipated launch in the UK in the summer is equally successful.