No.... But it will be in de Service pack that is going to be released next week!
sneak peak, you could do something like:
@using DancingGoat.Models.Sections
@model Kentico.PageBuilder.Web.Mvc.ComponentViewModel<ThemeSectionProperties>
<div class="row @Model.Properties.Theme">
<div class="col-md-12">
@Html.Kentico().WidgetZone()
</div>
</div>