edd-product-version.php

<?php

/**
 * Shortcode: EDD Product Version
 * 
 * [edd_product_version]
 * You can add id="post_id_here" to display the version number of a defined product.
 */
function shortcode_edd_product_version($atts) {
	$atts = shortcode_atts(array(
		'id' => get_the_ID(),
	), $atts);

	$args = array(
		'download_id' => get_post_meta($atts['id'], '_edd_sl_version', true),
		'download_name' =>  get_the_title($atts['id']),
	);

	$result = null;

	if (class_exists('EDD_Software_Licensing')) {
		$result = $args['download_id'];
	}

	return $result;
}
add_shortcode('edd_product_version', 'shortcode_edd_product_version');