I believe that Sonos will be introducing their own voice assistant accompanying gadget that will permit them to work with the other assistants like Alexa, Google, Cortana, Siri et. al.
Saw this in the Privacy Statement
Voice control works by your voice enabled Sonos Product “listening” for a specific wake word. Please note that not all Sonos Products are voice enabled.
Sonos does not retain a copy of your voice recording. Concurrent with the voice recording, your Product will collect data (for example, decibel level at each frequency) about the ambient noise in the room. It is not possible to extract any speech from this type of data. We collect this data to help us improve our speech recognition technology. For example, if you are trying to state a voice command while music is playing, Sonos may improve the technology by lowering the music so that your voice command can be properly understood.
Its not about integrating Alexa with the Echo .. something more! Maybe an Echo Dot copy but working with more than just Alexa.
If true, that will be awesome. Let the excitement continue!!!!