Edgar Rice Burroughs, inc has authorized a new John Carter of Mars novel.
I haven't read any of the non-Burroughs books they have put out, but apparently this is the 3rd in the series. There was also a Tarzan in Pellucidar novel released not long ago.
It is encouraging that the estate has been making efforts to build on ERB's legacy by turning his works into a Universe. Some of the Dynamite John Carter comics are interesting, but have been received with mixed reactions. I recently picked up the Vampirella meets Dejah Thoris comics that came out a couple years ago, which I have to admit look pretty good to me.
From the press release:
Tarzana, California (June 22, 2021) –The groundbreaking Edgar Rice Burroughs Universe series continues with John Carter of Mars: Gods of the Forgotten by Geary Gravel—the third novel in the Swords of Eternity super-arc, a cycle of all-new canonical novels expanding Edgar Rice Burroughs’ worlds of wonder and adventure! Preorders of the book are now available directly from ERB, Inc. Softcover and hardcover editions, as well as a limited Collector’s Edition with a signed bookplate, will be available in a simultaneous release. The novel is expected to ship to customers Late Summer 2021.