render-dynamic.js

Ember.Handlebars.registerBoundHelper('render-dynamic', function (name, context, options) {
  // name was passed as a variable, but should be passed to render as a string
  options.types[0] = "STRING";
  return Ember.Handlebars.helpers.render.call(this, name, context, options);
});

template.hbs

{{#each section in sections}}
  {{render-dynamic section.templatePath "content"}}
{{/each}}