2nd AOR from visa office
Once your application arrives at the visa office, they will sit on it for a while. When they are in a position to process it most visa offices will send you a 2nd AOR. the wordings vary from visa office to visa office. Also some offices send by email, and others send by snail mail. There is still no need to do anything at this stage. A few visa offices, most notably London, will not send a 2nd AOR at all but will skip this and go straight to medicals, or ask for further documentation