Don't think so. Our using the devices today shows that a green light message left shows on all Alexa devices, When asking to hear message, it asks whose messages do you want to hear.As I said in my post about the new app, not as handy as Amazon wants us to believe. I'll stick with iMessages and texts or even phone calls they are more convenient and even better than this alexa feature. Phones are in pockets, and Dots, etc are not.
As for alexa video, how can they be better than Facetime? Anyone who uses Facetime will realize this.