Credit card companies have been doing this for several months. This pr campaign (if you can call it that) they are doing is to explain the actions they have been taking. FWIW, credit card companies always had the power and our approval to do this by a lil clause that says something to the effect of, "We reserve the right to change this agreement and/or interest rate at our discretion."
Many people have wondered whats going on, but its been happening, even to those of A credit status to reduce the outstanding credit available that banks have on the books and to increase income
This economy and the new rules about credit that finance companies dream up in times like these is why Dave Ramsey holds the philosophies he does.