Beta 1 (released on 03.11.2015)

    Web-panels
    Chromeless UI
    Tabs visual navigation
    Private window
    Page loading progress indicator
    Typed history list
    Smooth scrolling
    Geolocation support
    HTML5 h.264 support
    Full Extensions support

http://www.nextinpact.com/news/97155-le-navigateur-vivaldi-est-desormais-disponible-en-beta.htm