The October 30 update talked about here does not include the updated microG.
Here it sounds like (to me) the October 30 update should be the fixed version of the former 0.12 update which got retracted, and it sounds like (to me) it’s being rolled out to a limited number of users for testing purposes.
But sadly it seems this supposedly fixed update could cause an even bigger boot issue than the original update did (bigger because switching the OS slot back to the prior version of the OS doesn’t seem to help anymore). We’ll have to see.
There’s a number missing in this, unless /e/ changed the naming scheme of the update files.