Thread:ADour/@comment-27733967-20170926132003/@comment-3406131-20170927084116

Ah yes, I was thinking about that first tweet, but (hence the "IIRC", the answer was more vague -or maybe it wasn't that tweet).

The second tweet (which is the one I mentioned earlier that would completely prove me wrong on post-Secret Wars) settles it:
 * Adventures of the X-Men #12 was set in the previous iteration of the Multiverse. cf. Jeff Christiansen's answer, many handbooks (mentioned by Jeff) and an official correction of the handbook on Marvel.com.
 * Al Ewing retconned it.

I believe that keeping Sentience of the Universe (Earth-TRN566) apart (at least for now) is the best course: It seems a lot, but truth be told, apart from the confirmation it can't be the Sixth, we don't know anything (yet).
 * We don't know which Cosmos is involved (given Ewing's answer, I would even believe this is a "removed-from-continuity" type of situation, which would presumably expel this reality from the Multiverse to the Megaverse, or anything else to ignore it).
 * The idea of Annabel about it being "rather either the Second, Third, Fourth, or Fifth." is not to be forgotten, although the reverse should be done:
 * Adding the retcon and original destination to give a frame
 * Explaining (using the tweet) that it can't be the Sixth and we don't know how "this" "Earth-0" fits in the multiversal model now (and that's it).

Can someone (my Twitter accounts are all more or less lost currently) tweet Ewing again for a question such as "In which iteration of the Multiverse is set Adventures of the X-Men #12?".