Google's recent confirmation that Gemini 4 has entered early post-training, with DeepMind leadership signaling an "as soon as possible" release well before year-end, is shaping trader views on the next Pro-tier model. After skipping the long-promised Gemini 3.5 Pro amid a shift toward iterative Flash updates like the September 2 Gemini 3.8 Flash, the company faces competitive pressure from faster rivals while testing internally on platforms such as Antigravity. This leaves timing uncertain, with no confirmed date or benchmarks yet, though historical patterns favor staged previews over immediate general availability. Traders see the spread of probabilities across October dates reflecting both the potential for an early rollout and risks of further refinement delays in a fast-moving large language model landscape.