**Traders assign an 89% implied probability to "No" on Half-Life 3 being announced before 2027 because Valve has repeatedly failed to meet the most credible 2025–2026 rumor windows while maintaining its signature secrecy and perfectionism.** Development on the project (internally referenced as HLX) continues, with dataminers confirming active work, engine updates, and a dedicated team, but no trailer, teaser, or official statement has materialized despite multiple hype cycles. Expected reveals tied to The Game Awards 2025, November anniversaries, or a spring 2026 Steam Machine launch all passed without confirmation, and Valve decoupled the game from hardware plans while raising internal quality bars. With only weeks remaining until 2027 and Valve historically unwilling to rush announcements or market unpolished titles, the market consensus reflects the pattern of shifting goalposts and the absence of any verifiable catalyst in the final stretch of 2026.