In any case, though, my understanding is that the technical capacity for this has existed for nearly 10 years now, just behind a configuration setting. So it's possible that this change is just a code cleanup. It's also possible that someone is trying to increase the percentage of searches that have location information, that doesn't seem terribly far-fetched either, and I can imagine lots of ways people could try to rationalize it as actually benefiting users. (Whether it actually does benefit users is of course debatable.)