Just downloaded Hearthfire on the PS3 and looked in the DLC option in the main menu to check it was there. I'm extremely happy with how the game and Dragonborn specifically runs now, but I found it extremely amusing that after all the crap Bethesda have got with people speculating how these DLCs will break the game further, Hearthfire appears as HearthfireS - the game runs great but they forgot to spell the title of the thing correctly

That is how they spell it on all systems, it's supposed to be that way apparently.