LittleOwl the waiting really is horrible, especially for those who have been called back.
My understanding was that only those who sat for entry at 13 could get invited to sit 12+ and those sitting for entry at 11 will know definitively either way on Friday.
We sat this one for 11.. If we had done it for 13 and were offered the chance to retry 12+ .. we wouldn't as the uncertainty would be too much. But that is mainly because I wouldn't want the agony of this whole process to continue any longer!
Very best of luck to everyone