Amazon has announced a new Echo model: SEATTLE--(BUSINESS WIRE)--Sep. 14, 2016-- (NASDAQ: AMZN)--Amazon today introduced an all-new version of the groundbreaking Echo Dot for under $50, so you can add Alexa to any room in your home. Just like Echo, Echo Dot gives you access to all of Alexa's capabilities--she can answer questions, play music,