The new Investigatory Powers Tribunal Rules 2018 came into force on 31 December 2018, revoking the 2000 rules: see here. The 2018 rules apply to all section 7 Human Rights Act 1998 proceedings before the Tribunal and all covert investigatory powers complaints under section 65 of the Regulation of Investigatory Powers Act 2000, including those which were made before the new rules came into force.