This seems gimmicky. Are there people that actually need months of battery life? Now, if that extra battery was needed for a new feature like a larger screen, that would be something. Should I expect additional wedge-covers that offer solar panels or a fuel-cell option for years of battery life? How about a wedge that allows you to slap in 16 AAA batteries, which is useful if you're hiking cross country.
I would like the screen to go all the way to the edge. The content within the screen doesn't necessarily need to go to the edge, but amazon is going to force you to have margins anyway and so they might as well push the margins to the edge of the device than shrink your content down. And they can then draw haptic controls into the margin of the screen and you have the option to position them higher or lower to fit your holding style (the wonders of e-ink!).