EPCOT according to Walt's inital vision was "a place wherein people {of all nations} could live and work in the future together" So Future world was born yes, then World Showcase. I honestly think that if they do this without showing us any artwork, we're just speculating here.
Soon as I see some artwork, then I'm happy, and will look forwards to my next trip, until then, I am just confused of why Norway and not the area behind Haunted Mansion. Heck if you ask me it makes more sense to put Arendelle behind Haunted Mansion with two ways to get to it. The Riverboat ride, which is already on a track "round trip tours to Arendelle" perhap ? plus a few walkways, last I knew, there was even enough space to put a trainstation back there "Arendelle Station!!" anyone ?