I've been tracking the progress of ROC approvals using the data, albeit limited, we have available on VisaJourney. For example, I've filtered this page to only show the Nebraska Service Center (where our case is) and then sorted by Filed Date: https://www.visajourney.com/timeline/liftlist.php?cfl=0&op1=1&op2=d&op3=&op4=1&op5=5,9,10,11,12&op6=Nebraska Service Center
As of today, if you go to pages 8 and 9, you can see there is a clear cut off in which cases with with NOA dates of December 2022 and earlier (page 9) have mostly all been approved, regardless of whether N400 was submitted. Cases with NOA dates of January 2023 and later ( page 8 ) have mostly not been approved. The very few cases with an NOA date of January 2023 or later that have been approved seem to be due to an N400 filing.
The approvals for cases with NOA dates up to December 2022 were being issued at a steady pace by USCIS through May 2024. At that point, this service center seems to have cut off approvals. Rather than continuing at the same pace, there have been essentially no case approvals in June or July 2024.
I was expecting that ours, with an NOA month of January 2023 with no N400 planned, would likely be up next, but it seems we've gotten unlucky and USCIS has taken a pause for some unknown reason on basically all cases with NOA of January 2023. Has anyone seen something like this before? Is it a "lull" due to employee summer vacations, or could they have decided not to continue with cases with NOA of January 2023 or later for other reasons? I know we can only speculate, but that is why I made this thread :).