Good to know. It just did not seem right.
Here is the official explanation from CD Projekt’s CEO Adam Kiciński:
“After seeing the video many of you worried about the quality of voiceovers and the different voices used by lead characters. We’re proud that our team members can imitate native English actors so well that some people would even consider these VOs being part of the final product :). However, we are not planning to change RED into the world’s first non-native recording studio for English movies and games by using non-native non-actors. Don’t worry, we’ll stay in our day jobs. The voices in the video are not in any way final, and were only created for the purposes of the video. By the way – personally, I don’t like Geralt’s voice in this movie either ;).”
Smiley faces were inserted by Adam, not us.