Stars, a high-end raiding guild, used that to its advantage this patch; they cleared Firelands on its normal difficulty, faction-transferred en masse, and then began clearing it again, this time banging away at its hard modes. Why? To get a leg up on the competition, of course. Players watching the situation were waiting for an official response from Blizzard, assuming that a lack of response would be the developers condoning the faction transfer practice -- but I think this decision clears up the situation pretty well. It was an oversight on the developers' part that hopefully will not happen again.
The other hotfixes today include numerous class changes, Firelands balance tweaks, and an assortment of bug fixes. You can find them all past the cut below.