11 Q&As. Excerpt: "This guidance is in addition to the guidance provided in Notice 2010-84. Part A addresses the applicability of Notice 2010-84 to in-plan Roth rollovers of otherwise nondistributable amount s. Part B provides additional guidance relating to in-plan Roth rollovers of otherwise nondistributable amounts. Part C provides guidance relating to all in-plan Roth rollovers.... [To] give plan sponsors sufficient time to adopt such an amendment and thereby enable plan participants to make in-plan Roth rollovers of otherwise nondistributable amounts before the end of the 2013 plan year, the [IRS] is extending the deadline for adopting a plan amendment ... to the later of the last day of the first plan year in which the amendment is effective or December 31, 2014, provided the amendment is effective as of the date the plan first operates in accordance with the amendment. Thus, in the case of a 401(k) plan that has a calendar-year plan year, in order for the plan to permit an in-plan Roth rollover of an otherwise nondistributable amount during 2013, a plan amendment providing for that option must be adopted no later than December 31, 2014."