The status may or may not change. Some people get actively reviewed status, others don't get it.
When I waited for my I-751, I got biometrics reused status, while others had "Case received" and nothing about biometrics for a year. Some of those cases got approved before mine. In short, online status means little. Many times USCIS sends letters without changing online status. You should receive letter soon, I'd say first week of September would probably be the latest.