Do you still get access to your eBooks?
If you access the android market and download the nook app then yes you are able to access the books. It really makes the device even better than it already is.
However, the version I have on my nook is the pre-release of honeycomb. I’m betting it’s going to be about 1000% better when the full version comes out.
I downloaded it from here: http://forum.androidcentral.com/barnes-noble-nook-color/57500-how-download-install-honeycomb-nook-color-sd-card.html
which is really nice since it is completely ran from the SD card. If I want the original nook back I just pop out the card.