I was told that there will not be any pre-made FDC this year but yes, you can get the ink on your personal envelopes for several days and there is no need to rush to the special post offices on the day it is released.

Only if you send the letter certified through real mail it kind of make sense to have the tracking information show the first day. And even then the online tracking will be gone after a few months.. I sent more than 50 crypto stamps 1.0 certified around the world and 4 of them were lost. For me 10% is worth thinking twice about sending a more rare edition of the new stamp again, certified or not, in the end, it might be gone... especially if everyone can scan the stamp when it is on the letter.