@An_dz:
Vivaldi Team has already confirmed they are looking into a mobile version, but let's first get a decent (more stable/more features) Desktop version, then we can start talking about mobile.
Totally agree; focus on desktop browser is more important than creating a new browsers at this moment, specially considering the size of the Vivaldi team. A sold start with one will help with the marketing for another, also it will increase user satisfaction.