They won't get rid of 1914 any time soon. This is in the Nov 2016 WT Study edition. There have also been recent WT studies where the first sentence in the article treats 1914 as a proven fact.
Malachi 3:1-3 describes the time —from 1914 to early 1919—when the anointed “sons of Levi” would undergo a period of refinement. (Read.)
During that time, Jehovah God, “the true Lord,” accompanied by Jesus Christ, “the messenger of the covenant,” came to the spiritual temple to inspect those serving there. After receiving needed discipline, Jehovah’s cleansed people were ready to take up a further assign- ment of service. In 1919, a “faithful and discreet slave” was appointed to provide spiritual food to the household of faith. (Matt. 24:45) God’s people were now free of the influence of Babylon the Great. Since that time, by Jehovah’s un- deserved kindness, his people have con- stantly been growing in knowledge of God’s will and in love for their heavenly Father. How grateful they are for his blessing![1]