Lattice devices are sometimes replaced with newer generation devices that offer greater functionality and higher levels of integration. To determine if the device you are using is still in production refer to the device datasheet (which can be found on our website).
http://www.latticesemi.com/support/partnumberreferenceguide.cfm?source=topnav
You can also talk to a Lattice representative from your local sales office:
http://www.latticesemi.com/sales/index.cfm