Out dated template file variable.php causing issues

We are the author of the plugin Woocommercec Custom Product Addons. Our customers have reported some issues that the fields are showing twice in the product page, on checking the issue we noticed that the template file single-product/add-to-cart/variable.php is an outdated one,
what a solution we could recommend to our customers, Or will you be releasing new updated with changing the template files to new one.