The new track is titled "Heatstroke", reported Entertainment Weekly.
The "Heatstroke" artwork Harris shared is graphically similar to the art for "Slide," the single he released in February that brought together Migos and Frank Ocean.
"Heatstroke" will be the EDM star's second new cut of 2017.
In January, he tweeted that he'd release 10 songs this year.
The release date of "Heatstroke" is not yet known.