No. New Nokia 6 (2018) is not a waterproof mobile phone.
Yes, Nokia 6 (2018) does have the fast charging support.
Yes, Nokia 6 (2018) does have the OTG support.
Yes, Nokia 6.1 (2018) does have the Corning Gorilla Glass 3 protection.
Yes, Nokia 6.1 does have the optional beauty mode in the selfie camera.
At the end of the day, the Nokia 6.1 (2018) brings some welcome improvements over its predecessor.