The factory in Windsor Ontario is shut down for five weeks and will restart production on August 12. All production from that point on will be 2020 models. If you can't find one in stock your best bet is to put down a deposit on a car that a dealer has pre-ordered for their own inventory. That is what I did when I was looking for one at this time of year, two years ago.
2018 Molten Silver Pacifica Hybrid Limited purchased Nov 30, 2017.