Special effective date
(B) Special effective date(1) In general. Except as otherwise provided in this paragraph (f)(2)(i)(B), paragraphs (d)(1)(iii), (d)(1)(iv)(D) and (E), (d)(1)(vi), (d)(2)(ii) and (v), (d)(5)(ii)(B), (d)(5)(iv), (d)(6), (e)(2), (e)(3)(iii), (iv) and (v), and (e)(4) of this section apply to plan years that begin on or after January 1, 2017 (or an earlier date as elected by the taxpayer).