{if isset($product)}
    {if (is_object($product) && isset($product->new) AND $product->new == 1) OR 
        (!is_object($product) && ((isset($product.new) AND $product.new == 1) OR
        (isset($product.details) AND is_object($product.details) AND isset($product.details->new) AND $product.details->new)))}
        <div class="@iconNew.classNames @classNames">
            <span>{l s='New'}</span>
        </div>
    {/if}
{/if}