Thanks for the question. Students who have taken both the current and the new MCAT exam will have all scored exams (current and new) reported with their AMCAS application. Scores for the current MCAT exam will continue to be reported to medical schools through the 2019 AMCAS application cycle. Again, each school will determine how old an MCAT score they will accept, so we encourage you to consult the Medical School Admission Requirements (MSAR). The information in the MSAR is updated each year, including the year and month of the latest and oldest scores accepted.
--AAMC Pre-Med Services Team