**The primary driver behind current Polymarket odds for an SI.gov launch—33% by October 15 and 59% by October 31—is the September 29, 2026, Executive Order directing federal agencies to replace “Artificial Intelligence” and “AI” with “Super Intelligence” and “SI” in official communications.** This terminology shift, paired with the October 1 registration of si.gov under the Executive Office of the President, positions the domain as the likely successor or rebrand of AI.gov. The recent America.gov launch, which consolidated thousands of federal sites into an AI-powered interface, demonstrates the administration’s capacity for rapid rollout of new .gov properties. Traders appear to view a mid-October launch as plausible given the short timeline from the EO, but not guaranteed due to typical government web deployment, testing, and content migration requirements. Key upcoming catalysts include any White House announcements or visible site activation in the next week, which would directly inform resolution criteria requiring a fully public, non-placeholder official government website.