It is pretty exciting, to look at the old ads and think of what might have been.

Or what was made and never released, and is still sitting in the files somewhere, unpublished.

I recall an ad that ran in the DC titles in the summer of 1975 for THE LEGEND OF KING ARTHUR, "a super-size four-part series", written by Gerry Conway, and illustrated by Nestor Redondo.
(I dug out an issue of KAMANDI 33, Sept 1975, that had the ad, which ran in all the DC titles that month.)




There was also a gorgeous Limited Collectors' Edition, THE BIBLE, that preceded this King Arthur ad by a few months, which likewise has gorgeous art by Redondo.
It was to be the first of several ongoing Bible adaptations, but that turned out to be the only issue.



According to an article in THE JACK KIRBY COLLECTOR, there was to be a DINGBATS OF DANGER STREET ongoing series, of which pages of several issues have been unearthed. (The only issue to see print was FIRST ISSUE SPECIAL # 6 )





Kirby's 1971-1972 projects, the DAYS OF THE MOB and SPIRIT WORLD magazines, were both cancelled after one issue, but additional unpublished material exists for these.
An unpublished story, created for DAYS IN THE MOB issue 2, finally saw print in AMAZING WORLD OF DC COMICS # 1 (a fanzine) in 1974.





The stories planned for SPIRIT WORLD # 2 finally saw print in WEIRD MYSTERY TALES issues 1, 2, and 3, and FORBIDDEN TALES OF DARK MANSION issue 6, which are all actually better for it, because they were printed in color instead of B&W, as they would have been in the magazine.




The black romance title Kirby was to produce at the same time (1971) was SOUL LOVE, and although unpublished, several stories were completed.
Two Morrows reprinted some of these pages in THE JACK KIRBY COLLECTOR.
And I have them in MASTERWORKS, a tabloid-size book from 1978 that has a brief biography of Kirby, as well as many unpublished Kirby pages, rejected cover pencils, and other rare unpublished treats by Kirby.
The cover is of Fighting American, pencilled by Kirby and inked by Walt Simonson !
The MASTERWORKS book also incudes a cover of ARMAGETTO: THE FINAL BATTLE between Orion and Darkseid, described as a cover drafted by Kirby for a projected tabloid-size giant book that would have concluded the NEW GODS saga in the early 70's, but was obviously never produced.





On the heels of their late 70's work on DETECTIVE COMICS 471-476, and MISTER MIRACLE 19-22, Steve Englehart and Marshall Rogers were to have produced a MADAME XANADU series, but Englehart and DC had a falling out, and the scripts were produced in 1983-1984 as SCORPIO ROSE for Eclipse. (Englehart gives his account of the falling out in his editorial in SCORPIO ROSE # 1)
There was one issue of MADAME XANADU before Englehart and DC parted ways in 1980:






One I really looked forward to was a DRAGON SHADOWS graphic novel, to be written by Harlan Ellison and illustrated by Michael Kaluta. It was advertised on the back cover of THE COMICS JOURNAL 54 (March 1980), and later reproduced on the back cover of the 1988 book THE MICHAEL WM KALUTA TREASURY. This was a gorgeous page, apparently the cover, but since Ellison never got around to doing the script, Kaluta never illustrated it, and the cover was all that was ever produced.
A glorious version of The Shadow, that might have been.

Although there are many well-realized stories with the Shadow that Kaluta has done with other writers.


Earlier in the topic, someone mentioned a Kamandi backup that was announced to be "coming soon" in WARLORD. To my knowledge, that is incorrect.
I think you mean the O.M.A.C. series by Jim Starlin, begun in KAMANDI 59 (cancelled after in the 1978 DC implosion, so the series was discontinued after only that single issue).
But the Starlin O.M.A.C. series was finally revived in 1981 as a backup in WARLORD 37-39, printing the inventory stories by Starlin, and at long last concluding the series.