From the ARRL VE Newsletter, June, 2018:
The newly revised pool, released in January 2018 (updated and re-released February 12, 2018) by the Question Pool Committee (QPC) of the NationalConference of Volunteer Examiner Coordinators (NCVEC), must be in use starting July 1. There are three graphics required for this pool and 423questions in this pool, down slightly from 426 in the previous pool.
With the Technician class exam questions changing July 1, new test designs must be used effective that day. Previous ARRL VEC supplied Technician class exam booklet versions (2014 series) and computer-generated Technician class exams created from the 2014 question pool are only valid until midnight June 30, 2018. At that time VE Team leaders should destroy or throw away the old versions of the Technician exams (do not return them to VEC).To avoid a mix-up at the session, do not save old exam versions!