This should all be taken care of now, with the possible exception of the unofficial chat channels, since I don’t participate there. If anyone wants to post the announcement there, please go ahead.
It also seems that the wind we got on our side also due to the lucky coincidence of google going evil (forcing logins for viewing qubes-users) it helping out a bit too (quite a few people seemed to care, from what I saw).
So I guess so far we can call it a successful launch!