Board Thread:General Discussion/@comment-6302057-20140707103046/@comment-4839682-20140708145117

They can credit her as whatever they want, but they have officially referred to her as the Ice' Queen. They are not obligated to follow "Disney media".

Now, if that changes once they drop a press release, the page name will change. But not until then.

"Master storytellers Edward Kitsis and Adam Horowitz ("Lost," "Tron: Legacy") invite everyone to join Emma Swan, Snow White, Prince Charming, The Evil Queen, Hook and all the other resident fairy tale characters as they prepare to defend themselves against a magical force from the past that's too dark and unpredictable even for Rumplestiltskin - The Ice Queen."

source