Well both of my brother's RFE was cancelled!! After the update on the USCIS website, we waited two weeks and then called USCIS for not receiving the RFE letter. They said they will send out another letter, we got a letter saying that RFE was cancelled and told us to disregard the RFE and the case is under review and with an officer. It was NOT update on the USCIS site so we were still concerned what is going on, so I called AGAIN. The lady told us that both of my brother's case is approved already. =)