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.
Stated as firm, per macrumors.com: pre-orders opened September 9 ahead of a stated launch date of September 18, 2026.
MacWorld corroborates the same announce-then-sale sequence, noting Apple revealed the watches on 9 September 2026 and that they officially "went on sale on Friday, September 18, 2026," matching the pin.
Wikipedia's Apple Watch Ultra article confirms "Ultra 4: September 18, 2026," an exact match to the pin's stored date.
The Apple Post, published 9 September 2026 (the pre-order day), confirms the watch is "arriving in stores on Friday, September 18," matching the pin's stored date.
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.
The same event, pinned 1 more time. On the timeline they stack, the most watched (then most viewed) on top: this one.