Just filed! Received the receipt number immediately, as others have said. It already says it's being actively reviewed and that biometrics will be reused. Processing time estimated at 7 months, I hope that's accurate - I waited a longgggggggggg time for I-751! Do we all have receipt numbers that being IOE? Is that the norm, and because I filed online? I think this is the first form I've been able to do this way, everything else has been stacks and stacks of paper.