Model 3 production is scheduled to begin in late 2017. North American deliveries will be first, followed by Europe, Asia and Pacific countries then countries with right-hand drive configurations. Those who own Model S or Model X cars will be offered priority production slots as a special thanks for supporting the Tesla mission.
Model 3 = https://www.tesla.com/model3
FAQ – Model 3 = https://www.tesla.com/support/model-3-reservations-faq