Hey,
you can't really know if the visa has been approved from the notes, but you can get an idea of where the VO is at, and what they have assessed, and what they think. It also allows you to prepare yourself better if you are required to attend an interview. for example, if you see in the notes that the VO has doubts about your relationship, you can start preparing some more proofs etc.
Ordering them will give you an idea of where they are with your application and the general idea, but I don't think you can get the idea about the visa - you will only know that you are approved when they tell you officially.
Good luck,
Sweden