re: Doug Pardee
I haven't notices slower page turns anywhere.
I haven't noticed the darker background in reading mode. I think the background is exactly the same while the text is darker.
I haven't had worse wi-fi connection problems. I always use my Nook at home and I've never had any problem using the wi-fi connection before or after the upgrade.
I haven't had any problem opening sideloaded ebooks.
Not mentioned is the battery life. I think it's been improved (in Airplane mode).
I can't comment on the other points.
Overall, I think version 1.5 is a tremendous improvement.