The plot summary on the blog above is pretty detailed, but at first glance, it seems to be missing the big reveal in the closing moments of the play, which is that Gloria and Vera are actually cousins and that Gloria has been "passing" her entire career.
In terms of a Broadway run, Robyn Goodman is attached commercially to the forthcoming production at the Geffen Playhouse in LA this fall (which Jo Bonney is directing again.) I've heard Lynn Nottage is going to continue working on the play there, and if it's received well, they're hoping it could transfer to Broadway in the spring.
Tonya Pinkins: Then we had a "Lot's Wife" last June that was my personal favorite. I'm still trying to get them to let me sing it at some performance where we get to sing an excerpt that's gone.
Tony Kushner: You can sing it at my funeral.