Only a few are trickling out yet but there's already a lot of videos on youtube.
It seems the Mavic 2 is similar noise level to Platinum - relatively quiet - and you should get slightly better range, plus 2 or 3 minutes more battery life.
The batteries are quite a bit bigger, and more expensive, than original Mavic.
I wouldn't rule out the cheaper new Zoom version, being able to optically zoom without getting too close has a number of advantages. While technically the camera isn't as good as the Pro it's a significant improvement on the old Mavic - which wasn't too bad either in decent light.