The International Chamber of Commerce (ICC) has published the final part of its six-part series on the 2026 ICC Arbitration Rules, which enter into force on 1 June 2026. The ICC explained that the updated Rules introduce changes to written communications, time limits for awards and confidentiality to improve efficiency, transparency and procedural clarity while preserving procedural flexibility. Written communications, including requests for arbitration, answers, counterclaims and requests for joinder, will be submitted electronically by default, with hard-copy submissions permitted only in limited circumstances where electronic transmission is impracticable or specific delivery methods are requested. The Rules also replace the previous six-month deadline for final awards with a framework under which the ICC President sets and may extend award deadlines based on the procedural timetable of each case, while retaining the separate timelines applicable to expedited procedures and maintaining existing measures to address unjustified delays. In addition, the Rules expressly require arbitrators to keep arbitration matters confidential, subject to limited exceptions, and encourage appropriate security measures to protect sensitive information, while leaving parties free to determine their own confidentiality arrangements and maintaining existing confidentiality obligations for ICC Court members and Secretariat staff.