Amazon Introduces 2 Alexa Voice-Controlled Devices - The New York Times

But can they talk to each other? Also see Nest and Alexa working together (Inside Nest blog) and It’s Amazon Echo’s World, Now Alphabet’s Nest Just Lives in It (Re/code)

"Amazon, the Internet retailer, on Thursday announced two new siblings for the Echo, the voice-controlled household assistant that people address as “Alexa” and that became a surprise hit for the company last year.

One new product, Amazon Tap, is a slimmer, shorter, portable version of the Echo. Rather than requiring an electrical wall connection, the Tap runs off a rechargeable battery. It connects with phones and the Internet through Bluetooth and Wi-Fi. [...]

Amazon also announced the Echo Dot, essentially an Echo without that device’s powerful speaker. The Dot, which will sell for about $90, looks like a hockey puck, and is meant to provide Alexa’s voice functions for existing speaker systems. The Dot connects to those speakers either through a wire or over Bluetooth; after that, it functions as another Echo "

Amazon Introduces 2 Alexa Voice-Controlled Devices - The New York Times