It seems that this has been in syncthing about 2.5 years[1], is there something that changed recently to make this notable now? [1] Initial release behind a fe

It seems that this has been in syncthing about 2.5 years[1], is there something that changed recently to make this notable now? [1] Initial release behind a feature flag in 1.15 on April 6, 2021 and without the feature flag in 1.16 on May 4, 2021.