Congratulations!
According to me, this is kind of a confirmation that your app will not have any issues. Unless something comes up in security and u need additional screening.
Activity 6, 11.2 review required is also common.
Basically, your notes should have program assistant notes as well as case analyst notes. Case analyst notes are really important cause he has done all the work and recommended that ur app meets requirements.
Now the officer will look into your file and normally he/she has to just overlook the work done by the analyst and recheck that everything looks good, they don't normally go in deep cause all the work is done by case analyst and if he/she found something - they would have written here in notes for the officers to see...
In short, its just the time, u can relax, you will not be asked for additional docs or ur visa will not be refused - unless they found out what u did last summer!