That was incorrect, like I said, they’re just calling the higher number groups given out Backup Boarding Passes. They’re given in order right after regular boarding passes. And backup passes ran out like 20 mins after regular ones this morning according to what I saw.Supposedly they'll do 100+ groups in the early morning(according to Blog Mickey)...and then add extra in the evening IF the situation warrants it.
Blog Mickey clarified what they said earlier