This letter continues a recent trend in CFTC staff no-action letters of providing relief through 2020 or until relevant regulatory action is taken by the Commission. This is in contrast to the previous approach, in which letters were frequently extended for one year at a time. The relief in this letter, for example, was first issued in December 2013, and extended once in each subsequent year (generally with only a month or so until the prior relief was to expire).
Notwithstanding that the additional time is helpful to market participants for planning purposes, it's curious here that the staff felt the need to say, three years in advance, that they do not intend to give further relief. A lot can happen in three years.