The very limited-time donuts feature the chain's signature yeast ring donuts covered in a lemon-flavored glaze (they're essentially lemon-glazed version of the chain's Original Glazed Donut).
The Lemon Glazed Donut will be available through Sunday, September 2, 2018. They were first introduced earlier this year in April. You can find my review of them here.
Photo via Krispy Kreme.