The phrase "global premiere" means the first official public showing or introduction of something, like a movie or a product, that is simultaneously released or made available worldwide. Full definition
Fastback Kia Stinger revealed in European specification The European specification of the new Kia Stinger is revealed in Geneva following the car's global premiere at the 2017 North American International Auto Show in Detroit. (motor1.com)
Ford conducted global premieres of two sedan concepts on the February 3 - a Ka sedan in Brazil that measured over 4m, and a sub-4m version of it, branded the Ford Figo Sedan Concept in India. (rediff.com)
Technically, Telluride doesn't call any of their films «premieres» or even «world premieres,» but they certainly have had many a prestigious global premiere in the last few years including Oscar winners «Argo,» «The King's Speech,» «12 Years A Slave» and «Slumdog Millionaire.» (indiewire.com)