Just to add my 2 cents to the conversation regarding battery life, I too have noticed a very marked improvement in battery life since the November firmware update.
However, reading all the posts about last week's firmware update, I think I'm going to pass on this one. All of my eBooks are in ePub format (anticipating the day when this format will truly be the universal standar

), so I don't want to risk the painful page turning issue. I don't listen to music while I read (too distracting for me, unless it's purely instrumental) so I don't need the thumb wheel changes.