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 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,

If you own one of the current generation of Echo Show devices, not only will you be able to use Alexa Plus, 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 Plus access are: