Board results from last week should be in front of the Admiral by middle of this week and "hopefully" notifications go out Thursday or Friday.
There has been a delay in notifications for alternates due to a ripple effect of service academy appointment notifications which was due to the DODMERB debacle. That seems to be sorting itself out now which means people who applied to both USNA or USMA and NROTC will likely shift to a service academy of they are appointed. This opens spots for NROTC.
And from there the alternates get notified. When will that happen? I think there will be some alternates notified in the next two weeks because they are above the revised cut line and have stayed above for two successive boards. With only a couple boards left it is safe to tell them they made it. An unofficial rule (meaning this isn't a guarantee but has generally proven to be true......) IF you received an alternate notification letter AND you are Tier 1 or Tier 2, then your odds are good to very good that you will be selected. If you received an alternate letter and you are Tier 3, you may get selected of a Tier 3 shifts to a service academy or different branch for ROTC.
Depending on the college, telling the admissions office you will attend if you receive the NROTX scholarship sometimes gets them to hold a spot for you. But those are the smaller colleges and not the big ones or Ivies.
I hope that helps.