The bank letter only references the bank accounts to give you 30 day notice so you can stop direct deposit and arrange auto withdrawals from another account.
The credit cards they don't give you notice so you don't max them out before they shut it. It seems to be the credit cards were close 7 days after letter was sent out.
In addition it not from yesterday this card closing is in the works for months 1,000 of ppl have been closed. Citi closed business cards also...