Alexa Plus is here but it's only supported by four Echo products as of now, and won't be supported by more than half a dozen Echo devices.

Amazon held its Devices and Services event today, during which it made some major announcements. Here's what you can expect from the new Alexa+.

It's the biggest upgrade Alexa has ever received – but will it work with your devices, or will you need to upgrade to get the most out of it? On stage, Amazon's team mostly demonstrated Alexa+ using the latest Echo Show devices,