This is a major plus if you have multiple things running through Alexa and happen to lose your internet connection.
At £75 (US$96), it seems like a fairly cheap way to make your Echo sound better, if you're already invested in the Alexa ecosystem. I don't have anything to say about this. However, It has better sound and can act as a hub for your smart home gadgets.
Seriously, there's a lot going on.
Also in related speaker news, Amazon is adding a software development kit for multi-room audio that other speaker makers can use in their devices. We already had an inkling about the Alexa-enabled microwave, as rumors about it surfaced earlier this week, and images of various Echo devices leaked yesterday. If you want to know the weather, Google Assistant will throw up some graphics to go with it.
The Echo Sub will be available on October 11 but the dates for the rest of the Echo devices are not yet confirmed.
The all-new Amazon Echo Plus costs $149.99 in the USA, £139.99 in the UK.
The updated Echo Show has a more stylish design, and a larger, 10-in display and an upgraded speaker system with dual, side-firing 2in Neodymium drivers, a passive bass radiator, and real-time Dolby processing. Still no word from Amazon if it can access YouTube videos natively.
Jorrit Van der Meulen, vice president of Amazon devices global, said: "We want you to have access to Alexa everywhere - in your kitchen, in your living room, in your office, and more". The small device sits on the dashboard of your auto and allows you to connect your phone via Bluetooth. "Now with Fire TV Recast, we've made it simpler to find, watch, and record live over-the-air TV at home and on your mobile devices". Its speakers have been moved to the rear, under nondescript fabric. That's Echo Input. With it, you can connect to any speaker in your home and turn it into a smart speaker. It's got improved sound, too, along with Bluetooth and 3.5mm connectivity so that you can connect another speaker to it. Amazon released a wide range of electronics ranging from speakers to clocks, all powered by Alexa. When paired together with an Echo or Echo Plus, the Echo Sub function as a subwoofer would. It's available next month for the same price, $230.
For you home theater people, Amazon announced Echo Link Amp and Echo Link.