Dear Internet Measurement Community, We are pleased to announce that IMC 2026 will once again offer two separate submission cycles, giving authors increased flexibility in preparing and submitting their work. Key details: * The first submission deadline is anticipated in the second half of November 2025. * A second deadline cycle will follow in the spring, dates to be confirmed. Stay tuned for the official Call for Papers, which will include precise dates, submission guidelines, and formatting instructions. Please share this update with colleagues and collaborators who might be interested. We look forward to reviewing your innovative contributions! Best Regards, Esteban Carisimo Publicity Chair of ACM IMC 2025