I thought I heard that the NYC International Toy Fair that is usually held in Febuary of every year was being changed to either October or November instead starting this year..
The BIG Toy Fair is held every year in Feb, usually the 2nd to 3rd week. The buyers get in a day or so before the press. No public access.
For the last several years, there has also been a late Fall mini show - also buyers and press only - to showcase newer product.
Sometimes toy companies hold their own Fall events. Hasbro used to host one in Florida in August I think.