I emailed admissions at the beginning of December asking this question.
They said:
“You may have your counselor email it as an attachment to Team Blue (this will change depending on who your team is) if there is a big difference in your RIC or GPA. If it is just to update your grades you can either send it unofficially by email or mail or officially by mail or electronic service such as Parchment, escript etc.”
They didn't make it seem like a requirement, but I still think it's a good idea. I am planning on sending it over because I improved my RIC and GPA.