No this has nothing to do with the movie. Many people have suggested disguise in the past but I beleive this is a new way to implement it
Disguise: The disguises would be uncraftable armour items that would very uncommonly drop from civilian NPCs. A player could wear a full set of disguise to be unrecognizable to their enemies of that specific faction. The disguise would provide no armour points and you would be recognized immediatlly if you attacked anyone or talked to anyone. Only certain factions would have diguise drops, mainly mannish factions like gondor, rohan, harad and rhudel.
Spies: as a counterpart to the disguise there would be several npc 'spies'. Basically they would be rare npcs that would act neutral with enemy factions regardless of their faction. The Gondorian renegade would be made into a spy. There would also be and isengard spy to go along with the bree faction and easterling spies in dale
Both of these additions would allow players to travel through enemy lands without being attacked