No. They would not want to lose millions upon millions of customers just because they changed their service agreement. Most, likely, this is just a notification, because they may be legally bound to do so. Essentially, this means, if you do not agree with their changes, you can stop using their services before the change takes place. From time to time, you will see these e-mails from places like Google, or Facebook, explaining that their policies have been "updated", "changed", or "simplified". This usually means that some condition of the service agreement has been altered for some legal reason. The e-mail was likely sent to every single user on their service.