If you haven't already heard - give it up to the folks down at Racebending for getting Marvel to response to the Runaways casting.
Here's the letter they got.
Thank you for reaching out regarding your concerns over Marvel’s recent casting notice for THE RUNAWAYS. We appreciate your interest in our production and with Marvel Entertainment.Sweet sweet non-whiteashed characters.
“To address your concern over casting for the role of Nico, as we do with all of our films, we intend to stay true to the legacy and story of the comic when casting these parts. Thus, our goal is to cast an Asian American actress as depicted in the comic series and the casting notice will be adjusted accordingly.
“We thank you again for your correspondence and the opportunity to clarify our process.”