New Pumpkin Spice Frosty will have fans fallin’ in love beginning September 12 WASHINGTON, Sept. 6, 2023 /PRNewswire/ — The rumors are true, D.C. – it’s fall Frosty® time. Grab your favorite sweater and head to your local Wendy’s®, because Wendy’s Pumpkin Spice Frosty is joining menus…