The voice component of Samsung's Bixby assistant has been a long time in coming. The company was quick to boast about its AI helper at the Galaxy S8 launch, but revealed that the signature voice feature wouldn't arrive until later in the spring... and even then, it only had a full launch in South Korea. Americans had to make do with a preview. At last, though, it's becoming widely available: Samsung is officially rolling out Bixby's voice assistance to S8 and S8 Plus owners in the US. Every American with one of the flagship phones will get to talk to Bixby once an update arrives "tonight." There have been a few tweaks to this official release, too.