Although you’ll need an Echo Show 8, 10, 15 or 21 to get access to Alexa Plus as part of the initial rollout, it will be available on all Echo devices with a few exceptions I’ll cover below. These are the Echo devices you already own that will support Alexa Plus with a voice-only experience:

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.com. Inc will release companion devices in the fall for the artificially intelligent version of the Alexa voice assistant, Chief Executive Officer Andy Jassy said in an interview with Bloomberg Television.

If you own one of the current generation of Echo Show devices, not only will you be able to use Alexa+, you'll also be one of the first to access it as part of an early roll-out program. The Echo Show devices with early Alexa+ access are:

Amazon is bringing the new AI-powered Alexa Plus to a wide range of its existing Echo devices — but the upgrade will skip many of the earliest models. The majority of the company’s first-generation Echos won’t get support,

Amazon’s just revealed Alexa+, the new version of the Alexa assistant, but it won’t have all of its cool powers on every Amazon device.