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[5]: "…ured Using TSMC's 10nm Process With the launch of the new iPad Pro models at WWDC this year, Apple i…"
Wikipedia's Apple A10X article gives the "six-core CPU, with three high-performance Hurricane cores and three energy-efficient Zephyr cores" at 2.38 GHz, the M10 coprocessor, 4 GB LPDDR4 in the iPad Pros and its video codec support.
AppleInsider (30 June 2017) reports TechInsights confirmed the A10X as "the first chip in a device using TSMC's FinFET 10nm chip fabrication process," the specific claim in the pin's title, about two weeks after the iPad's 13 June on-sale date as the teardown analysis followed.
iDownloadBlog, also dated 30 June 2017, independently corroborates the same TechInsights finding that the A10X is "the first TSMC-built ten-nanometer chip to show up in a consumer device," aligning with AppleInsider's[3] report and the pin's claim.
MacRumors[1]' own report confirms the "new 2017 10.5-inch and 12.9-inch iPad Pro models... are today available for purchase," dated 13 June 2017, matching the pin's stored date for the iPad Pro's on-sale launch.
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.