I always like the idea of eating produce that is in season. Not only does it usually taste better, but the prices are also often lower. I found this resource of Fall foods from health.com. I will warn you that the page has a ton of ads, but if you don't mind scrolling past them I think the information is good.
Also, the site is not a "diabetes" site, so you might want to check the carbs and glycemic index of the foods - some may be tough on blood sugars.
I'm looking forward to Fall apples and sweet potatoes. How about you?