Today, I learned that a "bookazine" is a thing... it involves elements of both a book and a magazine. Unlike a magazine, it can use an ISBNs, whereas magazines use ISSNs... Also Bookazine [https://bookazine.com] is a global distributor... so... if you're ever out there trying to figure out how to subscribe to a magazine's future issues, but it doesn't have an ISSN for you to give to your librarian, check the cover & see if you see a Bookazine logo on it anywhere... might explain things. Also remember to breathe because sometimes new information can be overwhelming...
That said, might someone be a friendly lamb & let me know if it's possible to subscribe to future editions? This is the 10th edition -- idk how often they might publish more. It appears this one was initially published in DEC2022.
UPDATE: I figured it out. Check comments.