I-485 추가서류 받았다는 메세지받고 나서
진행상황을 이민국사이트에서 확인해보았습니다. 2개월내란 말은 없어졌습니다.
보통 이렇게 나오나요?

On May**, 2015, we received your response to our Request for Evidence for your Form I-485, Application to Register Permanent Residence or to Adjust Status, Receipt Number LIN********. Our Nebraska Service Center office will begin working on your case again. We will mail you a decision or notify you if we need something from you. If you move, go to http://www.uscis.gov/addresschange to give us your new mailing address.