Ok... here is a quick math lesson.
What is a quarter? It is when you take 1 whole and break it into 4 pieces.
How many months in 
ONE year? 12 right?
Break 12 into 4 equal parts. You get 3 pieces to one quarter, right? (12 divided by 4 = 3)
So that means there are 3 months to a quarter of a year.
 JAN  -|
FEB  -|- First quarter of the year
MAR -|APR  -|
MAY  -|- Second quarter of the year
JUN -|JUL  -|
AUG  -|- Third quarter of the year
SEP -|OCT  -|
NOV  -|- Fourth quarter of the year
DEC -|So, looking at what we have so far, we can see that VF is scheduled to be released at the end of MAR. 

I hope this helps clear up any confusion on this matter. 
 
  
  
  
 