Meta's recent emphasis on open-weights releases and the new Muse Wonder frontier model has driven trader consensus toward a low implied probability of a Muse Spark 1.4+ launch by late October. The closed-weight Spark series advanced steadily with 1.1 in July, 1.2 in August, and 1.3 in early September, delivering gains in long-horizon agentic coding and tool use via the Meta Model API. However, the October 15 release of Muse Spark Open—an 816B/42B-active MoE model with 1M context optimized for local inference on Apple silicon—alongside Wonder's October debut has shifted internal priorities, with no public previews or timelines for the next incremental Spark update. Traders note historical monthly cadence may pause amid competitive pressure from rival labs and Meta's focus on broader accessibility and larger-scale efforts. Key near-term catalysts include Meta's earnings or any API roadmap signals that could alter release expectations.