From what I understand, the one hour applies to receiving an email to set up your turbo card account, where you can also see your temporary card info. Since the IRS officially opened today 1/27/20, to begin processing returns, you should receive an email within the next 48 hours to confirm advance approval or denial, and THEN the funds will be loaded onto the card.
The information given when first submitting the return was misleading, because it makes it sound as though you’ll have your advance within an hour which is not the case.
