DC's Rebirth relaunch saw many titles shipping twice monthly. DC Comics has since scaled back what it double ships, though a few select titles remain on that schedule. The publisher will now end double-shipping books altogether, with all remaining titles shipping once a month in 2020.Retailer Ryan Higgins said on Twitter, "DC told retailers yesterday (and told us it's ok to share today) that all the double-shipping books are going back to single shipping next year. They didn't want to lose the sales of two issues of Batman, so we get both the normal book and B/C [Batman/Catwoman] by King (like B&R from Morrison)."RELATED: DC Announces Batman/Catwoman Comic By Tom King & Clay Mann

"More info coming soon about Detective [Comics], Flash, Wonder Woman, and Justice League," Higgins continued. It's not known at this time exactly when which books will stop double-shipping. DC has not made any public statements about the changes yet.

Higgins post makes reference to Tom King and Clay Mann's Batman/Catwoman series, a 12-part comic beginning January 2020. That title's release will mark the start of Batman returning to a once-monthly schedule. DC already announced changes to the Batman shipping schedule earlier this week, with DC editor-in-chief Bob Harras saying, "a new Tom King and Clay Mann Bat/Cat series in 2020 fills the gap once Batman begins to ship monthly.”

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DC's currently double shipped titles are Detective Comics, Batman, Flash, Justice League and Wonder Woman. Tom King and Clay Mann's 12-part Batman/Catwoman will launch in 2020 and ship monthly.