CHICAGO--(BUSINESS WIRE)--Fitch Ratings has affirmed two and upgraded two classes of Ford Credit Auto Lease 2013-B. A full list of rating actions follows at the end of this press release. KEY RATING DRIVERS The affirmation of the outstanding class A notes and the upgrade of the class B and C notes reflect increased credit enhancement (CE) for all classes since close, and residual performance that has produced cumulative gains to date. The Stable Outlooks on the class A and B notes reflect Fitch