This latest update provides new features requested by users:
-unsubscribe functionality for subscribers
-shortcode for unsubscription form
-unsubscribe widget
-integrated unsubscribe ajax option for register form
-redirection option to send subscribers to link upon signup
In addition to several reported bug fixes.
You can find the plugin here:
http://www.totalbounty.com/864/wordpress-text-message-plugin-2-08-released/