The email states, "Square is discontinuing Final Fantasy XIV. They will be doing a field destroy credit of $16.00 each."
This move may be in preparation for the upcoming version 2.0 of the title, now called A Realm Reborn, which is slated to release for both PC and the PlayStation 3. A Realm Reborn will actually remove some of the content from FFXIV, possibly necessitating a new product. Square-Enix may also just be looking at rolling out a new package for the relaunched title.
When asked about the rumor, the company declined to address the email and stated that the beta will happen later this year.