Companies advertise their roadmap in their job postings long before they announce anything: a sudden cluster of hardware roles, a team being staffed in a new city, infrastructure engineers hired for a named capability. Postings are public, timestamped and structured. You track the postings for the companies behind your open markets and treat a hiring cluster as a leading indicator of what ships, and roughly when.
Markets on Polymarket where hiring & job-posting direction signal is the natural play: