autoship_frequency_cart_order_item_next_occurence_display_label
(src/cart.php) Used to transform the text of the label for products with Relative Next Occurrence Dates. Takes the $date_label, $formatted_date, & $product_id as parameters.
function change_next_occurrence_label() { return "Hold Order Until" ; } add_filter ('autoship_frequency_cart_order_item_next_occurence_display_label', 'change_next_occurrence_label', 10, 3;