In theory, but in practice it doesn't actually matter enough for it to make a difference. What software-only advances are being made in wash efficiency these days?
Improved detection of unlicensed dishwasher tablets.
or as Nintendo puts it "Improvements to system stability"
None, because they didn't have OTA updates... until now!
Release notes state they added and extra "dub" to the "scrubba-dub" routine. It is now a scrubba-dub-dub routine.
Release Notes v3: Accidentally added too many dubs leading to "scrubba-dub-dub-dub-dub-dub-dub-dub" routine. Rolled back to a reasonable number of dubs.