Spartan-3L is being discontinued as part of Customer Notice XCN07010.
The Spartan-3L family has been discontinued as part of XCN07010:
The Last Time Buy is May 14, 2008. For a replacement part, customers should use the standard Spartan-3 family, which has reduced quiescent current values now, or the Spartan-3A family, which offers the Suspend mode for low quiescent current and offers better support of Hibernate.
This notification (XCN07010) only affects the Spartan-3L devices. All other Spartan-3 Generation parts are still recommended for new designs. For more information, please see the Customer Notice mentioned above.