The Largest Maintenance Of Patreon (Patreon)

im sure many of you already saw the warning messages, looks like Patreon it's gonna be offline for a huge amount of hours, and i received a few contradictory messages from Patreon, one message says the maintenance will start november 27, others says november 26, anyways, if you see from 26 to 28 of november patreon its offline, now you know why.

now my question is, why it would take so long?, safety improvement, or big server migration?.

what you think?