The flavor is described as a mix of "pumpkin, cinnamon, and nutmeg, with a hint of creamy, buttery crust flavor."
If you happen to live in Canada, Jones has partnered up with Smoke's Poutinerie to offer the fall flavor at all their Canadian locations and will be featured as part of a Thanksgiving Poutine Combo starting September 21, 2015.
You might find the flavor wherever Jones is sold in Canada and the U.S. It's also available online at JonesSoda.com.
They're listing the flavor as "new" on their website so it's possible that they've changed up the formula this time.