http://www.techradar.com/news/the-entire-amazon-echo-lineup-explained-which-smart-device-is-right-for-you

After Amazon’s event earlier this week there will shortly be a formidable amount different versions Amazon Echoes on the market. 

In addition to the existing Amazon Echo, Amazon Echo Dot, Amazon Echo Show, and Amazon Echo Look, the ecommerce giant announced a newly redesigned Amazon Echo, a new speaker called the Amazon Echo Plus, and a mini screen-equipped device called the Amazon Echo Spot.