For the first three Fridays (October 6, 13, 2017), participating shops will be frying them up only after 6 PM, but on Thursday, October 26, 2017, they'll be available all day in celebration of National Pumpkin Day.
You can find a list of participating US and Canada shops at www.krispykreme.com/pumpkinspiceog.
The seasonal donuts take the donut chain's Original Glazed donut and add a hint of cinnamon and pumpkin spice flavor (you can find my review of them here).
Photo via Krispy Kreme.