You can still use them when you realize they have changed something that didn't need fixing because it wasn't broken... *Cough*IRNV*cough*
Think they explained the last time that these kind of updates don't actualy affect your gameplay at all so no notes. Don't think they were going to do notes like "Updated anti-hacker software to detect cheat X"
You believe them? Carv nerf anyone? Pretty sure that was a stealth patch nerf. Unless I do not recall correctly. I don't play TR, so I don't pay that much attention to them.