pretty close but FS letters are generally issued 6-8 weeks before OCS, and several have waited up to 9 months, many of the spring board rec'd OCS dates in the fall which is FY 16 so many of those FY 16 spots have been filled.
Don't count on the board happening for all on Dec 7th, they have been known to change things, I think last year that was the board that they only reviewed active duty applicants, then the year before they only looked at those applying for a specific designator.
Some of the reason for this is that by December many selections have been made but the goals (FY16 in this case) have not been solidified so they are trying to balance selecting some but not too many, they over-selected a few times and that resulted in wait times up to 2 years, they try to avoid that.
