Quote Originally Posted by Alien_Gamer View Post
They were talking about things like character collision, how your character interacts with other physical objects. Which doesn't necessarily mean anything with housing will change and I don't recall them saying anything about housing glitches at all.
From the unofficial translation in the FFXIV subreddit Discord

YoshiP: "There might be some things, mainly in housing because of floating items, that won't be possible after this collision update anymore. We tried to keep as many of them as they are right now, if something broke please let us know so we can try to reverse it"

With luck, it's just some of the more extreme glitches utilizing the out of bounds hacks that will be affected and not the relatively simple floating tricks we use. But I won't be surprised to find items we had floating away from walls and floors snapping back to them because the game decided they were close enough.