I don’t think we’ll see that either, but then again I never expected Blizzard to make gender change free.
I posted here on the forum claiming there would never be a free gender change within the game, but I was actually proven wrong shortly after.
I believe that Blizzard did make this free due to the current state of modern society. But when someone undergoes a gender change, it’s also very common to change their name to match their new identity. So perhaps Blizzard will reconsider this.