After the recent PSO2 Station+ there's a lot of speculation among players whether the graphical engine update will be region specific -as it's only been mentioned in a broadcast showcasing coming features to the JP version, and nowhere else besides.
Personally, I'm of the mindset that it would defy and invalidate the purpose of seeking parity between regions to implement a feature deemed necessary for NGS for just one region initially, especially if the intent is simultaneous content releases leading up to and through NGS. BUT! Rather than speculate or debate among ourselves, nothing beats simply asking for an official answer (at least, if an official answer CAN be given at this time).
So the question stands: will all regions get the graphics engine update at the same time?