I consider myself a big Potter fan and was waiting for this day to come, but it hasn't yet.
It will be official when, handles like Boxoffice, BORReport, Gitesh Pandya, etc. will tweet it. I am not believing Deadline who simply added Maoyan numbers to whatever they saw on Mojo.
If the accounts I mentioned, also post same numbers I will believe them with grain of salt.
BORReport followed my old ID, I would have directly asked him if he receive the mail or not. For now only @Shawn can clarify.