I just got an update on my kindle a couple of months ago, that improved the font, increased battery life, and added a landscape option for the screen. There is supposed to be another one coming any time (I've been leaving the wireless on), but the only change I know about with that one is more font sizes.
Now that the prices of the nook and kindle have been reduced, I'd like to talk my dad into getting an e-reader. If he got a kindle, I could register it and download a ton of military-oriented books from my kindle.
I've got a backlog of books waiting to be read, there has been a good run of free books lately.
vickie