An alleged internal Google roadmap leak on December 29th suggests accelerated development timelines for Gemini 4.0, sparking intense speculation about a potential release before the June 30, 2026 deadline. The leaked documents reportedly outline key development milestones being met ahead of schedule, driving prediction market traders to rapidly reprice the probability of an early launch. Yes shares surged 12 percentage points from 14% to 26% in heavy afternoon trading as investors reassessed Google's AI development capabilities and competitive positioning against rivals.

Market sentiment shifted decisively against a near-term Gemini 4.0 release on December 13, with the probability of Google launching its next-generation AI model by June 30, 2026 dropping from 66% to 82% for "No" - a significant 16-point move. The sharp price action suggests traders are increasingly skeptical about Google's ability to deliver Gemini 4.0 within the next six months, potentially reflecting concerns about development timelines or competitive pressures in the AI space.