This did not happen for me. I called three times in the last four days and was offered the same All Access deal each time: either six months at $84 ($112.64 all-in), $168 for twelve months ($223.28 all in), or $11.99 per month with a credit card on file.
Yes, it is less per month on a per-month basis than on a six- or 12-month basis, but they want the credit card on file, which they ain't getting.
So I took the six-month deal. The joke is, I'm getting a new car with a free year of Sirius All Access, so when I pick it up, I'm canceling this current subscription anyway.