Loader on front page?

I note after the last update, there's a loader and spinner on my front page. I can't seem to figure out what this is.

Here's the code block that seems to be doing it:

<div class="eb-template" data-name="site/layout/image/popup">

	<div id="eb" class="eb-image-popup">

		<div class="eb-image-popup-header">

			<div class="eb-image-popup-close-button"><i class="fa fa-close"></i></div>

		</div>

		<div class="eb-image-popup-container"></div>

		<div class="eb-image-popup-footer">

			<div class="eb-image-popup-thumbs"></div>

		</div>

		<div class="eb-loader-o size-lg"></div>

	</div>

</div>