The article is from Oct 2007, so if it's a new development, I guess it's been new for awhile.
Do the various CC issuers all use the same index or not? WOuldn't that tend to explain some variation from card to card or compared to online info?
Chase has a few cards that no longer charge forex fees, and I seem to recall another issuer (forget who) that dropped it recently. So there are some new options now if Capital One isn't so good anymore.