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 news.samsung.com: "Rollout starts today, Sept. 16, starting with the Galaxy S26, S26+, and S26 Ultra."
Independent read of the same Samsung[1] Thailand post, adding the 21 September global date for the S26 and cautioning it may be Thailand-only.
Reports the Samsung[1] Thailand press release that puts a date on the older Galaxy lines, which the global release did not.
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.