Does anyone know if there has been any guidance or discussion on when a 7.x release might become a longterm supported release?
Either way, an LTS appears to be released ~every 6th version, 6.18 is the newest LTS, so after that there's 6.19, 7.0, 7.1, 7.2, 7.3, 7.4 maybe LTS?
kernel.org has a nice FAQ about this topic.
edit: it is on purpose that gkh doesn't make that an official stance, see reason here: https://lore.kernel.org/lkml/Y8JnHyKNTHMjsHSb@kroah.com/