Doesn't surprise me either with their previous announcements. A shame though from what I hear their readers are/were great. I didn't like them at first since they used their own format, after that was opened up, I already had a Nook but I still heard that Sony was the best at side-loading/categorizing compared to other readers. The main author of Calibre would tell people to go and get a Sony if they wanted good side-loading with organization/categorization. I don't know if he still has the same opinion now or not.
I still prefer e-ink over LCD for long reading. But I think more of the market is going with multi-use tablets. And in that instance it is easier to organize books since you can do so via folders or other methods. Not to mention picking a reader app that fits your reading style (although I can't fault the Nook reader software does everything I want, except for the classic, but then again it did after a slight bit of hacking.