The NOOK Reading App 4.0 for Android supports a “read everywhere” strategy by bringing a unified NOOK experience to Android smartphones and tablets. The app combines customer-favorite features found on the Company’s line of NOOK tablets and eReaders, with new content types such as enhanced kids’ eBooks to give Android users the immersive experience that owning a dedicated NOOK device provides.
That sounds nice, but unfortunately I am unable to verify the report. You see, B&N hasn't actually released that app. The version available in Google Play was released yesterday, but it still shows v3.5.3 and not v4.0.
I would like to try the app and see what is new, but at the moment I'm stuck. If someone gets the app, do me a favor and send me a copy.
Update: The app is now available.