The speculations were confirmed on September 18, 2020, when it was announced that DC Universe would "transform" as of January 21, 2021 into "DC Universe Infinite", a comics-only service, and that the DC Universe original series, including shows like Harley Quinn would migrate to HBO Max. At the same day, Harley Quinn was announced to have been renewed for a third season which would be premiering on HBO Max.
- HBO Max Sets Official Launch Date Todd Spangler, Variety (April 21, 2020).
- Friendly reminder that Harley Quinn Seasons 1&2 will be available on @hbomax on Saturday, August 1st, 2020. Wear a mask. Patrick Schumacker, Twitter (July 29, 2020).
- DC Universe Transforms Into DC Universe Infinite the Ultimate Comic Book Subscription Service DC Publicity, DCComics (September 18th, 2020).
- You didn't think we'd let you down, did ya Puddin'? Harley Quinn Season 3 is coming to HBO Max! HBO Max, Twitter (September 18th, 2020).