Right now, NOAA restricts satellite images to no higher resolution than 50 centimeters per pixel, but those restrictions are set to relax in six months. Even then, the camera isn't powerful enough to make out the features on your face. It's biggest advantage is how fast it can send info back to Earth:
The WorldView-3 will send 1.2 GB of data back to Earth every second. That's faster than the fastest Wi-Fi you've ever experienced, and it means this puppy can send an extremely detailed image of everything between New York City and Washington, D.C., in just 45 seconds. It can collect and send data on an area of land the size of the U.S. every two days.
The biggest issue won't be prying eyes looking at private data, it's that there won't be enough eyes to parse through the massive amounts of useful data. In the meantime, if you're worried about other satellites taking your picture, click here to get an app that can notify you if and when it happens.