Or directed one, or acted in one, or worked crew, designed, etc? Does it have October performances?
If I didn't count it in September, I'd love to get the info for the Counting Actors project. Go here for how to report. Those who've done it already say it's super easy and takes less than 5 minutes.
And if the show won't open until November, but you've already got the details, go ahead and send it, and I'll get started on the November count.