That wouldn't be much of a surprise. It seems that whenever the MTA announces that somthing will be completed, started, or released by a particular month it always comes at the end of the month. The countdown clocks on the Brighton Line were supposed to come in October 2017, and went into service on October 30th. Phase 1 of the Second Avenue Subway was supposed to open in December 2016, and opened on January 1st 2017.