Interesting news!
I do not think they are confirming WWW is tied to Cora but they can be sneaky. I think all they meant is they are choosing a unique name, not Elsabeth or whatever the Helena Bonham Carter QoH from the alice movie had as a name, so similarly it is not Elphabah or whatever.
It could also be a synonym for a symbol of the character as Cora meant heart, so perhaps it’ll be something to do with Green or Wicked. I’d also think Dorothy, Glinda or even Cruella could be mashup-potential names.
If they are going on a color theme, it could be Emerald …Auntie “Em” to the Wizard being “Uncle ” Henry. Whee for Speculation fun.
“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass