Just to make sure we're not missing anything merch wise, I've collected a few images from folks kind enough to post updates from various tour locations.
Fuji Rock Festival (my flickr)
Scala (lamialex's instagram)
Troubadour (store.nin.com)
Lollapalooza (heavenly_bearded)
It seems the US festivals (and some European stops) used a red shirt instead of black for the backwards N design. Otherwise, there haven't been any other variations or additions from the festival leg.
Here's a quick recap with my shitty pictures. I haven't gone through the thread for better ones yet since ETS was down.
Posters sold separately [A / first night] Dates & Art (heavenly_bearded)
Posters sold separately [B / second night] Art & Dates (cheeseprocedure)
Here's the Merch video loop photographed by ninjaw:
http://flic.kr/s/aHsjNsP3zJ
Here's the outside booth from Kansas City with the alternate posters:
http://imgur.com/a/EDKDW
And here's the inside booth from Kansas City:
http://imgur.com/a/qikOD
Here's the outside booth from St. Louis with the new olive green shirt (and the night one posters from St. Paul):
http://imgur.com/OVMvhO4