The Echo (4th-Gen) features a new spherical design in terms of visuals. More than the exterior, the internals is what the new Echo is all about. For starters, it has an AZ1 Neural Edge silicon module. The module leverages machine learning and speech recognition algorithms to process the audio of voice requests. This addition of a new module will allow for all the audio processing to take place on the device itself, which will, in turn, offer faster responses to requests.
