If you were eligible & applied before June 1st, you should have received an email update in Creator Studio with more information. If your application is being held for an additional review, then you'll get a second update in the near future! Latest update: https://goo.gl/2icqfh
We don't have an exact date or time frame, but the additional review will happen in the near future. In the meantime, keep uploading original content as the more info/content to review, the better.