Plastic Logic to use AT&T network for new e-reader
reuters.com
reuters.com
I'd consider a Crunchpad as an alternative. I am using a Fujitsu Stylistic tablet currently.
I bought a used tablet and not only is it delightful to read on, I can actually do some work.
As far as the Crunchpad goes, if battery life is at least three hours and the price is less than a Kindle I am totally getting one.
If they want to go for a business model like Amazon's no-subscription 'Whispernet', wouldn't they get eaten alive by people using/cloning the SIM in other devices?
Even if it was integral to the device, it would still have to follow the standard interface, and potentially be cloned onto a standard removable one.
Like you said though, I doubt they'll use the same type of model that Amazon uses for data, simply because it will be easier to hack GSM.
I'm personally a fan of using GSM though, since that means the same device can then be used just about anywhere. And since we are talking about downloading books, the data requirements should be minimal, so using the AT&T network won't be as big of a downside as it is on the iPhone.