Macworld Apple rolled out yet another AirPods firmware update Wednesday, and once again declined to offer any details whatsoever about the changes it contains. Software version 6A321, an update for the 3rd-generation AirPods from 2021, is detailed in Apple’s AirPods firmware page with the usual boilerplate release notes of “Bug fixes and other improvements.” As my colleague Jason pointed out a couple of updates ago, Apple tends to use this language even when an update contains only bug fixes, with no “other improvements” at all. Of the 14 update release notes on that page, in fact, 12 simply s…