Section applicable to all claims for which the Secretary of Veterans Affairs provides notice of a decision under section 5104 of this title on or after the later of 540 days after Aug. 23, 2017, or 30 days after the date on which the Secretary submits to Congress a certification of certain capabilities of the Department of Veterans Affairs to carry out the new appeals system established by Pub. L. 115–55 and to address appeals of decisions on legacy claims, with provision for early applicability of the new appeals system to certain claims, see section 2(x) of Pub. L. 115–55, set out as an Effective Date of 2017 Amendment note under section 101 of this title, and bracketed note thereunder.