This issue is a variant of Justice League (DC, 2016 series) #11 [Fernando Pasarin / Matt Ryan Cover]. There exist further variants.
There is a 16 page fold-out promo insert included in this issue that accounts for the increased page count. On one side it is an 8 page promo poster for Justice League vs. Suicide Squad, on the other side it is 8 pages of promos including previews of Justice League vs. Suicide Squad as well as promos for DC Rebirth Volume 1 Graphic Novels.
Jessica returns after leaving the team in issue #7, she says that she came to help out.
Superman does not appear in this issue, he is said to be battling a Phantom Zone outbreak at the Fortress of Solitude, presumably initiated by Genie.