Updated September 14, 2015 at 5:49 p.m. ET: With the December 2015 solicitations, it was revealed that both Batman '66 and Sensation Comics Featuring Wonder Woman were also ending in December. In addition, Green Lantern: The Lost Army was absent from the December solicitations.
According to a DC spokesperson, Doomed and Green Lantern: The Lost Army were originally intended as "6-issue limited runs" like the Harley Quinn/Power Girl, Bizarro and All Star Section Eight series.
Neither Doomed or Green Lantern: The Lost Army were previously solicited as being miniseries like those three mentioned by DC.
Original Story: CBR reports that DC is cancelling five titles it in its superhero line: Doomed, Lobo, The Omega Men, Gotham By Midnight and Justice League United. According to an unnamed DC spokesperson in the report, Doomed's final issue will be November's #6, while December will be the final issues for the remaining four.
A sixth title, Catwoman, is reportedly continuing but with writer Frank Tieri and artist Inaki Miranda replacing the previous team of Genevieve Valentine and David Messina.
No reason was given for these reported cancellations, but according to the monthly Diamond comic book sales charts, all of the five titles except Justice League United are the company's lowest selling ongoings in its superhero line. Justice League United isn't one of DC's top sellers either, but the charts indicate that for American comic book shops it outperforms other ongoings such as Midnighter, Justice League 3001, Catwoman, Gotham Academy, Secret Six, Doctor Fate and Sinestro.
DC has not responded to Newsarama's request for comment.