Meta's Meta Superintelligence Labs has iterated rapidly on Muse Spark since its April 2026 debut, releasing versions 1.1 (July), 1.2 (August, alongside Muse Code), and 1.3 (September 2) with successive gains in long-horizon agentic tasks, coding efficiency, and multimodal reasoning. Version 1.3 notably reduced tool calls by ~20% and tokens by ~25% versus 1.2 while expanding the 1M-token context window and improving calibration on irreversible actions. This ~4-week recent cadence, combined with Zuckerberg's signals around open-weights releases and further scaling, drives trader expectations for a 1.4+ update focused on agentic usability and competitive benchmarks. Key near-term catalysts include potential open-weights rollout and developer API expansions that could accelerate or delay the next major increment.