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 arstechnica.com: "…before the end of this year. The newly announced cities are De … Lake City, Utah; and Seattle, Was…"
The Comcast corporate press page that was reachable actually describes a later, unrelated 2022 multi-gig rollout (34 cities by 2022, 50 million homes by 2025) rather than the original 15-cities-by-2017 announcement, so it only tangentially supports the pin's claim via the same corporate source, not a direct date match.
The page could not be fetched (403 Forbidden), but Neowin's own headline and November 2, 2016 publish date independently report Comcast's[2] plan to reach 15 U.S. cities with gigabit internet by early 2017, matching the pin's title and stored window.
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.