The dog tag program has been discontinued. Sammy announced that in the Black Friday Sales and Cyber Monday Nov 2021 thread, along with their new plans for physical objects. They’re still working on those new plans, so we don’t yet have any details beyond the announcements and discussions in that thread.
Might they decide to put the Longevity fields on a pendant (like the ones in the Enlightened States store)? Maybe. Your guess is as good as mine.
When could that happen? Again, your guess is as good as mine.