Removing the Sitecore Wrapper
These classes can all be removed. If you see these pages in the HTML of your page, it’s prudent to check the page layout. If the page is a single column page, you don’t need to take any action although removing those old classes is recommended.
If you have a page with multiple columns or a sidebar column, the row-fluid classes define those columns. If so, you may want to reflow your content into a single column for simpler pages, or use the Cascade’s layout options to reorder the content into columns.
This change can be made and published before August 3.