Trade 'will product X ship or be announced by date Y' markets (Apple events, GPU launches, console refreshes) by reading the breadcrumbs that precede an official announcement: FCC and other regulatory certifications, import shipping manifests, and the timing of press-event invites. The edge is that these public-but-obscure filings reliably leak a launch weeks before the keynote, so you can price the date correctly before the market reacts to the official reveal.
Markets on Polymarket where tech product-launch supply-chain signal is the natural play: