The Chinese version of Nokia 6 is currently getting the Android Nougat 7.1.1 Update, together with the Google Security patch for April 2017. We personally do not have the Chinese version with us, but this info was published on Twitter by two users who own the device.
Next up you can take a look at the Android 7.1.1 changelog created by Android Police. They separate the new features into 2 categories: Pixel-exclusive and overall for Android devices. Nokia devices run Pixel-like Android, so all hardware-independent features exclusive to Pixel should also be available for Nokia devices.
Pixel Launcher – swipe up for all apps, new Search Box, date/weather header on home
Unlimited original quality photo/video backup to Google Photos
Smart Storage – when storage is full, automatically removes old backed up photos/videos
Phone/Chat support (new support tab in settings), screen-share functionality
Quick switch adapter for wired setup from Android or iPhone