It's available on samsung server for non beta users.But samsung starts update with a percentage of devices, so I think we receive update within hours.If you are pro user, then download new update mannually and install it.
I think phones charge very quickly these days, so there's no need for this. And even if we do need it occasionally, there's no problem with charging it this way. And people say charging all night and in the heat damages the battery, and this has happ...