What happened
Connecticut Governor Ned Lamont signed Senate Bill 5 into law on 29 May 2026. Part of the law took effect 1 July 2026, requiring the Connecticut Board of Regents for Higher Education to establish a 'Connecticut AI Academy' by December 2026. SB 5 regulates frontier AI model developers (not just deployers), creates a regulatory sandbox, and includes chatbot/youth safety rules. This is a new substantive development within the window — the 1 July 2026 effective date for the AI Academy provision is a new implementation milestone.
Why it matters
Connecticut SB 5 is one of the most comprehensive state AI laws in the US, placing obligations directly on frontier model developers rather than only deployers. The 1 July partial effective date marks the law entering operational force. Combined with the FTC's proposed preemption policy statement (1 July), SB 5 is now a direct flashpoint in the federal-vs-state AI regulation battle.
Action needed
Frontier AI developers should assess compliance obligations under SB 5 and monitor whether the FTC's proposed policy statement, if finalised, would preempt specific provisions. Legal counsel should map the overlap between SB 5 requirements and the FTC's Section 5 preemption theory.