Plugin: PayPal Standard Forms
The changes in this version include a new hook that can be used when a payment notification is received from PayPal. For example, there have been requests to publish posts after the payment is successful and to add additional categories to a paid post. This can be done using the added "frm_payment_paypal_ipn" hook with custom code in a new plugin or your theme functions.php.
We are planning a code-free interface for a future release that will allow some of the most commonly requested functions like the ones mentioned above.
The other main change in this version is the added functionality to edit and delete payments.