Meta’s Muse Spark series has followed a roughly monthly cadence since mid-2026, with version 1.3 shipping September 2 after 1.2 in early August. As of October 12, no official announcements, API updates, or credible reports signal an imminent 1.4+ release, leading traders to price a 77% chance of no launch by October 31. The lab’s roadmap highlights larger models and an eventual open-weights version without firm dates, while recent developer discussions continue focusing on 1.3 capabilities in agentic workflows and coding. This pattern of iterative improvements without accelerated timelines underpins the market’s strong consensus on a later release.