I have a current Nook tablet. The only issue I have with it is that the screen's the wrong format for magazines. I don't see a Win8 Nook being a good thing, frankly, for the simple fact they'd have three different families of the Nook to deal with - the Simple Touch (greyscale, just a reader,) the Android-based Nook color/tablet, and this hypothetical Win8 based nook.

For a Win8 based nook to not kill B&N's ebook/ereader business, they'd have to guarantee that every app has a Win8 equivalent, that you don't have to re-buy them for the new platform, that there's little to no change in function or feature - otherwise, people looking for another Nook or upgrading from one a few years old will have one less reason to stay WITH B&N. They'll be looking at a whole new tablet unlike what they have now - which gives them more reason to look at Kindle at the same time, something B&N won't want to have happen.