Samsung has started rolling out updates to Bixby apps - including Bixby, Bixby PLM, Bixby Wakeup, Bixby Dictation and Bixby Global Action - in several markets around the world. Users from regions like the UK, South Africa, India, the Netherlands, and Germany are reporting about the updates.
So it's fair to assume that Bixby's global launch process has begun. However, it's worth mentioning that the company is yet to enable Bixby for most of these regions (a server-side change is pending, perhaps).
Fresh reports from Germany are suggesting that the dictation feature is working there.