Use :body and :side_body instead of deprecated :body_content_left and :body_content_right.

app/views/refinery/news/items/archive.html.erb

 <% content_for :title, "#{t('.news_item_archive_for', :date => l(@archive_date, :format => '%B %Y'))}" %>
 
-<% content_for :body_content_left do %>
+<% content_for :body do %>
   <h1><%= t('.news_item_archive_for', :date => l(@archive_date, :format => '%B %Y')) %></h1>
   <% if @items.any? %>
     <section id="news_items">

app/views/refinery/news/items/index.html.erb

-<% content_for :body_content_left do %>
+<% content_for :body do %>
   <%=raw @page.content_for(Refinery::Pages.default_parts.first.to_sym) unless params[:page] %>
 
   <% if @items.any? %>

app/views/refinery/news/items/show.html.erb

 <% content_for :body_content_title, @item.title %>
-<% content_for :body_content_left do %>
+<% content_for :body do %>
   <article class="news_item">
     <p>
       <small><%= t('.published') %> <%= l(@item.publish_date, :format => :long) %></small>
@@ -15,6 +15,6 @@
     </p>
   </article>
 <% end %>
-<% content_for :body_content_right, render(:partial => 'recent_posts') %>
+<% content_for :side_body, render(:partial => 'recent_posts') %>
 
 <%= render "/refinery/content_page" %>

app/views/refinery/news/shared/_body_content_right.html.erb

-<% content_for :body_content_right do %>
+<% content_for :side_body do %>
   <%= yield(:body_content_right_prepend) %>
   <%= news_item_archive_widget %>
   <%= yield(:body_content_right_append) %>