Played a few rounds last night as well. Initial impressions:
Sniping is much easier (less sway and you don't appear on minimap when u shoot anymore), although the map available in the beta really does favour snipers with all the mountain range sniping spots.
Full-auto mode weapons are very inaccurate for anything over 10 meters or so.
The new revive system is odd. When you play as a medic you don't know who needs assistance unless they call for it after they die. And if you die and request, nobody comes to revive you in any case.
Tanks are hard to kill (Don't want to say OP, it is only a beta after all, and people probably haven't unlocked appropriate weapons yet).
The graphics are awesome (I play on PS4, so I'll have to make do without 4k lol).
All in all, seems really promising and can't wait to get back in tonight.