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:

Amazon has unveiled Alexa Plus and while it’s rolling out to Echo Show smart displays first, most Echo smart speakers will also be supported.

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.