http://www.techradar.com/news/amazon-echo-is-out-of-stock-in-the-us-could-a-new-model-arrive-soon >Lots of action is happening around the Amazon Echo this week, and the latest development is a doozy: the flagship smart speaker is out of stock in the US.  >The Amazon Echo smart speaker in black is listed as "currently unavailable" on Amazon for the first time we’ve seen outside of Black Friday and Cyber Monday. TechCrunch was first to make the spot.