The English language version of Bixby Voice might be delayed due to "big data issue", however YouTuber Sakitech managed to download an early beta and record its range of capabilities.
In the 13-minute long video, Sakitech used his voice to get Bixby to perform a range of tasks such as turning on/off WiFi, taking screenshots and showing the latest photos in the Gallery app. It can also perform advanced tasks such as saving the parking location of your vehicle, changing the camera settings for video recording, controlling the brightness of the display and changing the screen resolution.
Sakitech also mentioned the native apps which are compatible with Bixby Voice; they include the Gallery, Contacts, Phone, Settings, Messages, Camera, Reminder, Weather, Clock, Samsung Internet and Calculator. Third party apps which support BixbyVoice are Facebook, YouTube, Messenger, Twitter, Tumblr, WhatsApp, Google Play Music, Maps, Gmail and Uber.