James Gunn wrote the Peacemaker series while he was completing work on The Suicide Squad during the pandemic.
As for whether or not Peacemaker is a prequel series, James Gunn has not said, which means that we’ll probably have to see how The Suicide Squad ends this summer in order to figure it all out.
As for The Suicide Squad, the movie is still on track to open in theaters in August.
The director/writer is clearly having a good time with the cast and crew of The Suicide Squad spin-off as filming continues in Vancouver, Canada.