A new pistol will not come from the factory properly lubricated for function. If it has anything on it, it will be primarily a rust inhibitor of some kind. I always field strip, clean as necessary, thoroughly inspect, then reassemble and lube to my standards every new gun I buy.
Pay particular attention to fit and finish, as if you have any issues you want to take up with the manufacturer, it's always best to do so promptly after taking posession, not months and many rounds later.