I just got my 2012 Vol. 1 Catalog. The R36 World's Fair Subway cars will be Proto 3. The # is 30-20105-1 (Rail King). They look fantastic.
The only frawback is that in order to complete the 6 car set (2 Car Add-On), you must buy Premier 20-98868 and 20-98869. These are the add on cars on flatbeds.
Anyone know if the cars are LED equiped?