Google’s Duo video call app today introduced group video calls for up to 8 people for iOS and Android users worldwide. At launch, Duo group video calls will not be available for Google Assistant smart displays, a company spokesperson told VentureBeat in an email. Google’s Nest Hub has no camera, but devices from JBL, Lenovo, and other brands can make Duo video calls, as can the Nest Hub Max, due out this summer. The ability to add text and emojis…