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.
Sonos's own newsroom (https://newsroom.sonos.com[2]/269788-sonos-welcomes-beam-ultra-and-sonos-ace-ultra-to-its-system/) states the Beam Ultra was announced with pre-orders on 1 September 2026 and general availability on 29 September 2026. The stated availability day is used as the pin date.
Sonos's[1] own newsroom confirms Beam Ultra pre-orders began September 1, 2026 with general availability September 29, 2026 at $699 - a later general-availability date than the pin's stored September 8, 2026 date (drawn from Gear Patrol's roundup), though the product had already been announced and was orderable by then.
Engadget corroborates Sonos's[1][2] own timeline - pre-orders from September 1, 2026, general availability September 29, 2026 - again later than the pin's stored September 8 date, though consistent with the product already being announced and available for pre-order by that point.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.