Amazon updates it's Echo family

Amazon introduced the Echo Spot, as well as introducing two new versions of its speaker-only Echos. 

One is just known as the Echo, while the more advanced version is called the Echo Plus. Both include audio enhancements with a new speaker architecture, a dedicated tweeter, a 2.5-inch down-firing subwoofer and Dolby sound. 

Both also have improved far field technology, which means you should now be able to shout "Alexa" at your Echo from across a crowded room and it'll still recognise you.

So the full lineup now looks like this: