Here is someone elses take on oil changes at end or start o the season.

"It is better to change the oil and transmission fluid at the end of the season, prior to storage. Lubricants naturally accumulate moisture, combustion by-products, and other contaminants during use. It can be detrimental to store an engine or drive with large amounts of these contaminants present."

I still think it doesnt matter. Oif i have the time i change it at the end, if to busy i change next year