My wife went for her interview for N400 and I751 this morning and was approved! She took the oath immediately after. It seems like they would collect 4-5 people and would have an oath ceremony every 15 minutes or so. This was the San Diego office. Here's my review: https://www.visajourney.com/reviews/view-dos-cis-reviews.php?entry=31512
I wish everyone who is still waiting the best of luck!
Also, I really just want to thank this website and the community for all the support along the way of this long journey. Couldn't have done it without you all!