Amazon Prime subscribers in the U.S. who have Echo smart speakers can receive notifications 24 hours before discounts go live—and even have their Alexa purchase the items for them.

Finally, we have a flagship Alexa+ speaker, and I'm really impressed. It just needs three more features to make it an unstoppable smart speaker.

Amazon took to the stage in New York City today to unveil four new versions of its smart speaker and screen hardware, ...