Samsung promised a lot of things regarding Bixby during the launch event of the Galaxy S8 back in March. However, it disappointed fans across the world when Bixby was released with minimal features which did not even include basic voice commands that every other AI powered smartphone assistant has at this point of time. It only included Bixby Vision and a few other features like Bixby Home and Reminder; all of which has potential but feels incomplete nonetheless. That situation is about to change though as Samsung is now rolling out an update which will enable voice functionalities on Bixby. Currently, it is only going live in South Korea, but I am pretty sure the international rollouts should start within the next few days.
Now that voice command on the S8 is finally a possibility with Bixby, we will have to wait and see if it's actually good enough to do "everything" like Samsung claimed it would be during the launch event, or if it was just a gimmick. In any case, life is going to be hard for Bixby in the nations where Google Assistant is available for use. With its superior set of features, vast experience and the magic that is Google, the Assistant might prove too tough to compete with for Bixby; especially since the S8 also has it right out of the box!