The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Bose's[2] own press release (https://www.bose.com/pressroom/bose-updates-the-iconic-quietcomfort-headphones) of August 6, 2026 states pre-orders open August 8, 2026 with shipping beginning August 13, 2026. August 13, 2026 is the day the headphones started shipping to customers.
Bose's[1] own press room confirms the QuietComfort Headphones (2nd Gen) were announced August 6, 2026, with preorders 'August 8' and shipping 'August 13' - predating the pin's stored September 8, 2026 date, consistent with the item already being available by the time of the roundup.
SoundGuys corroborates the same rollout, noting the headphones went 'open for pre-order on August 8 for $359' and began 'shipping on August 13,' again ahead of the pin's stored September 8, 2026 date.
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