On 25 August 2015, the official Twitter account for M&Ms acknowledged the new fall flavor:
.@POPSUGARFood One can never have enough Pumpkin Spice Lattes, darlings. I would know… - Ms. Green
— M&M'S® Brand (@mmschocolate) August 25, 2015
According to PEOPLE, Pumpkin Spice Latte M&Ms are available at Target as a seasonal flavor.