On May 2nd, we got an email from USCIS that says an action was taken on the case. Looking at the USCIS API for our case (screenshot posted), it says it was last updated on that day. However, there's no update on myUSCIS as of right now - no case status change or new documents uploaded. Speaking with an Ask Emma agent, there's no update on the case, but the interview was waived 2 weeks after NOA1 and it was transferred to the local FO in late April.