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: "…The new Surface Pro and Type Covers are available to pre-order today in the United States and select…"
Microsoft's own newsroom post confirms the new Surface Pro was announced 23 May 2017 - matching the pin's stored date - though the product itself didn't go on sale until 15 June 2017 across 24 markets.
CNBC's own headline, 'Microsoft[2] just unveiled the new Surface Pro,' and same-day 23 May 2017 publish date independently report the Shanghai unveiling, matching the pin's stored date, though the page itself returned a 403 error and could not be fetched directly.
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.
