Board Thread:General Discussion/@comment-25626-20170320151510/@comment-25626-20181103012326

From what I can tell, Gauntlet Press is one of those small publishers that can sometimes spontaneously generate works.

According to this link, this project has been in the works since 2016. https://www.facebook.com/GauntletPress/posts/announcing-gauntlets-2017-publishing-schedulehere-is-our-2017-schedule-we-will-h/1088422617921798/

"...Beardless Warriors/Brothers in Arms by Richard Matheson . Co-edited by Richard Christian Matheson and Barry Hoffman we have all the stories for the anthology. Tipsheets are circulating but with the number of authors required to sign it’s been taking longer than expected. We’ll fit in layout between one of the books listed above as soon as tipsheets are signed. This will be a two book set, a tribute to Matheson whom I promised to publish his war novel prior to his death."

So it could just abruptly appear between now and December 31, I suppose. See, e.g., "The Fillmore Shoggoth" and "Interlibrary Loan" for examples of anthologies by small publishers that were released without a prior formal announcement or advance solicitation.