Assuming that the Feat of Strengths will no longer be obtainable post Cata, the only known or expected changes anyone should be mentioning in this horribly necro'd thread are Herald of the Titans, the Undying, and the Immortal. Those are the only ones that have been changed to Feats that I am aware of. I assume that they will no longer be obtainable, but seeing as there has been no blue confirmation on anything, like usual, who knows if they are just becoming FoS instead of achievements and will still be obtainable.