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: "…dels, now availa … with any new product launch, there is a wealth of information to sift through, so…"
Wikipedia's MacBook Pro article confirms Apple[3] "released significant updates" on 12 July 2018, including 8th-generation Coffee Lake processors and Bluetooth 5, corroborating Apple's own release date.
Apple's own newsroom (Singapore edition) press release, dated 12 July 2018, confirms the updated MacBook Pro with faster performance and new pro features, matching the pin's stored date exactly.
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.