It's a ground up redesigned wing. It shares nothing in common with any previous generation 747 wing, even the systems have been slightly changed.
Originally Posted by Boeing
High Speed enhancements
-New Advanced-technology airfoils
-New state-of-the-art raked tip
-Increased fuel capacity
Low Speed enhancements
-New Double-slotted flaps (inboard) and single-slotted flaps (outboard)
-Redesigned flap tracks and fairings
-Nacalle Chines
Misc
-Fly-By-Wire outboard Ailerons
-Fly-By-Wire Spoilers
-Aileron droop for improved performance margins
PACS = Pitch Augmentation Control System
Addition of a Hydraulic RAT on the #3 hydraulic system (ADP+EDP+RAT)
#2 & #3 Hydraulic systems elimininate the Electrical Hydraulic demand pumps and revert back to the Air Driven Hydraulic demand pumps.
#1 & #4 both get A/C driven AUX hydraulic pumps.
#1 and #4 reserves now transfer into the #1 and #4 Main tanks instead of #2 and #3 main tanks.