You didn't actually just "get" your October 2009 points. They have been in your account for a long time. If I look at my account online on the member website, it shows points for use years 2009, 2010, 2011, 2012.
The use year controls what year's points are used for a stay. With an October use year, your 2009 points would be for stays 10/1/09 to 9/30/10. You can also use banked 2008 points for stays during that time or borrow 2010 points for stays during that time. There's no waiting to "get" your points.