It will likely be relatively more 'splash resistant' than the current 430/730 which will get condensation inside the touchscreen (which I've corrected by putting a hand towel over it and cranking the heat), and will benefit by not having a moving face or a CD/DVD slot, but I still wouldn't even call it technically "splash resistant", maybe barely 'mist resistant'.
It's very likely not going to be IPX rated, though that would be nice/reassuring.