I think when status changes, an email always follows early the next morning rather than immediately. For example, I got access to the interview scheduler on Thursday afternoon, then got an interview invite email at 6:30am the next day. When I got accepted, my status changed the day I got the call, but the next morning (saturday) I got an email saying my status had changed.
Lesson is, always check your status before you go to bed!
Posted from my mobile device