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.
Happened as dated, per macrumors.com[3]: "…s by itself. By contrast, when the iPad was introduced in 2010, Apple[4] held a special event just for…"
CBS News confirms Apple[4] unveiled the Apple Watch at its event held "September 9" 2014 in Cupertino, with the device itself "available early next year" - matching the pin's stored 9-10 September 2014 announcement date, distinct from the device's eventual early-2015 release.
MacRumors[1]' live coverage confirms Apple's[4] iPhone/Apple Watch event took place on "Tuesday, September 9, 2014", matching the pin's stored date exactly.
Apple's 9 September 2014 press release describes the three collections in 38 mm and 42 mm sizes, the S1 SiP, Wi-Fi 802.11b/g and Bluetooth 4.0, Taptic Engine, Force Touch, MagSafe inductive charging, Digital Touch, Activity/Workout apps and WatchKit.
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.