Trader consensus assigns a 96.5% implied probability to no next Gemini Pro model release by October 31 because Google just launched its flagship Gemini 4 Argon on October 13 following a September 30 announcement. After scrapping plans for Gemini 3.5 Pro amid delays and DeepMind leadership changes, the company has prioritized phased rollout of Argon to API users, Pro/Ultra subscribers, and cybersecurity partners, alongside ongoing post-training refinements and safety evaluations. Recent cadence shows flagship updates spaced months apart, with faster iteration limited to Flash variants. A late-October surprise remains possible but would require an unannounced acceleration inconsistent with current verified timelines and resource allocation.