I don't think the "current" fleet plan is exactly accurate. But this still isn't really new news. Taking a look at the global economy, global shipping trends, and changes in technology (3-d printers...) the make up of FedEx express shipping is going to change a lot in the next few years. A smaller fleet with a much higher percentage of narrow body aircraft than what we've enjoyed in the past.
Glad we permanently locked in that narrow body pay rate to "protect wide body seats......"