I was referring to the mobile game. It was never confirmed the mobile game won't have the "World of" branding or have some form of integration with the MMO.
I said "slim chance" because I don't want people making huge assumptions in either direction: I'm old enough to remember when the entire Blizzard fandom was sure Overwatch was going to be a WoW property because the Draenei used the word Overwatch at one point.