Eugene Kim at Business Insider writes:

Amazon is aggressively expanding its presence in the real-world retail market, with a plan to open dozens of new pop-up stores in US shopping malls over the next year, a source familiar with the matter told Business Insider.

These stores mostly seem to be device sales locations, not bookstores. Meanwhile, Barnes & Noble's founder and interim CEO calls the retail environment "one of the worst I have ever experienced in the 50 years I have been in this industry."