That really is an overall great article, but not only as pointed out does it bizarrely state that "In Dahomey" was set in a "human zoo," but it also implies that the blackface number in the 1936 version, "Gallivantin' Around," had been a part of the stage version, which it wasn't. And, yeah, don't believe there was ever any Rhaposdy in Blue in the orchestrations. In terms of the revamping of "In Dahomey" for this production, it's odd to have the chorus sing at first in actual Zulu, as the whole point of the song is that they feel no connection to the (fake) African culture the Fair has imposed on them as a job. And unless the lyrics are being alterned in the chorus, they will still be expressing that sentiment. But the original Show Boat is in the public domain now, so if they want to change the lyrics to the chorus, they are certainly free to do so.
I love Show Boat to distraction, but have always said a revival wouldn't work right now. I have to say, this sounds like an interesting production that could maybe prove me wrong. Hope we hear from people who see it.