Sad, there is no common e-ink thread... It concerns Iliad, Sony Reader, lBook V8...
Well, as far as Iliad is a biggest e-ink reader among others, I post my thoughts here
Now we have our readers (someone still has not but it's a matter of time).
In my region it can be -25-35C cold in winter. And our readers are big enough comparing with PDA, mobile phones - almost no way to wear them under coat or other warm clothes.
So - how are you going to protect your devices from cold?
Let's think about it - first mass-e-ink winter
is close enough...